<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!--XBRL Document Created with XBRLMaster-->
<!--Version: 2.3.08-->
<!--Based on XBRL 2.1-->
<!--Date of creation: 08/17/2026-->
<!--Software architectural design and coding: A'c Dharmapremananda Avt.-->
<!--Copyright (c) 2026 I-NET Business Solutions, Inc. All Rights Reserved.-->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://brand.bt.com/role/Cover" xlink:href="btbd-20260628.xsd#Cover" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/CondensedConsolidatedBalanceSheets" xlink:href="btbd-20260628.xsd#CondensedConsolidatedBalanceSheets" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/CondensedConsolidatedBalanceSheetsParenthetical" xlink:href="btbd-20260628.xsd#CondensedConsolidatedBalanceSheetsParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/CondensedConsolidatedStatementsOfOperationsUnaudited" xlink:href="btbd-20260628.xsd#CondensedConsolidatedStatementsOfOperationsUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/CondensedConsolidatedStatementsOfShareholdersEquityUnaudited" xlink:href="btbd-20260628.xsd#CondensedConsolidatedStatementsOfShareholdersEquityUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited" xlink:href="btbd-20260628.xsd#CondensedConsolidatedStatementsOfCashFlowsUnaudited" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/SummaryOfSignificantAccountingPolicies" xlink:href="btbd-20260628.xsd#SummaryOfSignificantAccountingPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/IntangibleAssets" xlink:href="btbd-20260628.xsd#IntangibleAssets" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/PropertyAndEquipment" xlink:href="btbd-20260628.xsd#PropertyAndEquipment" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/AccruedExpenses" xlink:href="btbd-20260628.xsd#AccruedExpenses" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/LongTermDebt" xlink:href="btbd-20260628.xsd#LongTermDebt" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/StockBasedCompensation" xlink:href="btbd-20260628.xsd#StockBasedCompensation" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/LEASES" xlink:href="btbd-20260628.xsd#LEASES" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/ShareholdersEquity" xlink:href="btbd-20260628.xsd#ShareholdersEquity" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/RelatedPartyTransactions" xlink:href="btbd-20260628.xsd#RelatedPartyTransactions" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/CONTINGENCIES" xlink:href="btbd-20260628.xsd#CONTINGENCIES" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:href="btbd-20260628.xsd#SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/SummaryOfSignificantAccountingPoliciesTables" xlink:href="btbd-20260628.xsd#SummaryOfSignificantAccountingPoliciesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/IntangibleAssetsTables" xlink:href="btbd-20260628.xsd#IntangibleAssetsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/PropertyAndEquipmentTables" xlink:href="btbd-20260628.xsd#PropertyAndEquipmentTables" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/AccruedExpensesTables" xlink:href="btbd-20260628.xsd#AccruedExpensesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/LongTermDebtTables" xlink:href="btbd-20260628.xsd#LongTermDebtTables" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/StockBasedCompensationTables" xlink:href="btbd-20260628.xsd#StockBasedCompensationTables" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/LeasesTables" xlink:href="btbd-20260628.xsd#LeasesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/RelatedPartyTransactionTables" xlink:href="btbd-20260628.xsd#RelatedPartyTransactionTables" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/SummaryOfSignificantAccountingPoliciesDetails" xlink:href="btbd-20260628.xsd#SummaryOfSignificantAccountingPoliciesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/SummaryOfSignificantAccountingPoliciesDetailsNarrative" xlink:href="btbd-20260628.xsd#SummaryOfSignificantAccountingPoliciesDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/IntangibleAssetsDetails" xlink:href="btbd-20260628.xsd#IntangibleAssetsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/IntangibleAssetsDetailsNarrative" xlink:href="btbd-20260628.xsd#IntangibleAssetsDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/PropertyAndEquipmentDetails" xlink:href="btbd-20260628.xsd#PropertyAndEquipmentDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/PropertyAndEquipmentDetailsNarrative" xlink:href="btbd-20260628.xsd#PropertyAndEquipmentDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/AccruedExpensesDetails" xlink:href="btbd-20260628.xsd#AccruedExpensesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/LongtermDebtDetails" xlink:href="btbd-20260628.xsd#LongtermDebtDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/StockbasedCompensationDetails" xlink:href="btbd-20260628.xsd#StockbasedCompensationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/StockbasedCompensationDetailsNarrative" xlink:href="btbd-20260628.xsd#StockbasedCompensationDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/LeasesDetails" xlink:href="btbd-20260628.xsd#LeasesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/LeasesDetailsNarrative" xlink:href="btbd-20260628.xsd#LeasesDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/ShareholdersEquityDetailsNarrative" xlink:href="btbd-20260628.xsd#ShareholdersEquityDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/RelatedPartyTransactionDetails" xlink:href="btbd-20260628.xsd#RelatedPartyTransactionDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/RelatedPartyTransactionsDetailsNarrative" xlink:href="btbd-20260628.xsd#RelatedPartyTransactionsDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://brand.bt.com/role/ContingenciesDetailsNarrative" xlink:href="btbd-20260628.xsd#ContingenciesDetailsNarrative" xlink:type="simple" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/Cover" xlink:title="00000001 - Document - Document and Entity Information" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/CondensedConsolidatedBalanceSheets" xlink:title="110200 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaapAssetsCurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" />
    <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MarketableSecuritiesCurrent" xlink:label="loc_us-gaapMarketableSecuritiesCurrent" />
    <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapMarketableSecuritiesCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivablesNetCurrent" xlink:label="loc_us-gaapReceivablesNetCurrent" />
    <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapReceivablesNetCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaapInventoryNet" />
    <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapInventoryNet" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="btbd-20260628.xsd#btbd_InventoryBottledWaterHeldForResaleNet" xlink:label="loc_btbdInventoryBottledWaterHeldForResaleNet" />
    <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_btbdInventoryBottledWaterHeldForResaleNet" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="loc_us-gaapPrepaidExpenseAndOtherAssetsCurrent" />
    <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapPrepaidExpenseAndOtherAssetsCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="btbd-20260628.xsd#btbd_DeferredTransactionCostsCurrent" xlink:label="loc_btbdDeferredTransactionCostsCurrent" />
    <link:calculationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_btbdDeferredTransactionCostsCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsHeldForSaleNotPartOfDisposalGroupCurrent" xlink:label="loc_us-gaapAssetsHeldForSaleNotPartOfDisposalGroupCurrent" />
    <link:calculationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapAssetsHeldForSaleNotPartOfDisposalGroupCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets" xlink:label="loc_us-gaapAssets" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaapPropertyPlantAndEquipmentNet" />
    <link:calculationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapPropertyPlantAndEquipmentNet" xlink:type="arc" weight="1" />
    <link:calculationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapAssetsCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="loc_us-gaapOperatingLeaseRightOfUseAsset" />
    <link:calculationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapOperatingLeaseRightOfUseAsset" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaapGoodwill" />
    <link:calculationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapGoodwill" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaapFiniteLivedIntangibleAssetsNet" />
    <link:calculationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapFiniteLivedIntangibleAssetsNet" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssets" xlink:label="loc_us-gaapOtherAssets" />
    <link:calculationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapOtherAssets" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherReceivables" xlink:label="loc_us-gaapOtherReceivables" />
    <link:calculationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapOtherReceivables" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaapLiabilitiesCurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaapAccountsPayableCurrent" />
    <link:calculationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapAccountsPayableCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaapLongTermDebtCurrent" />
    <link:calculationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapLongTermDebtCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="loc_us-gaapOperatingLeaseLiabilityCurrent" />
    <link:calculationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapOperatingLeaseLiabilityCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaapAccruedLiabilitiesCurrent" />
    <link:calculationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapAccruedLiabilitiesCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaapLiabilities" />
    <link:calculationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilities" xlink:to="loc_us-gaapLiabilitiesCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaapLongTermDebtNoncurrent" />
    <link:calculationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilities" xlink:to="loc_us-gaapLongTermDebtNoncurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="loc_us-gaapOperatingLeaseLiabilityNoncurrent" />
    <link:calculationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilities" xlink:to="loc_us-gaapOperatingLeaseLiabilityNoncurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaapStockholdersEquity" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaapPreferredStockValue" />
    <link:calculationArc order="24" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapPreferredStockValue" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaapCommonStockValue" />
    <link:calculationArc order="25" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapCommonStockValue" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockCommonValue" xlink:label="loc_us-gaapTreasuryStockCommonValue" />
    <link:calculationArc order="26" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapTreasuryStockCommonValue" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="loc_us-gaapAdditionalPaidInCapital" />
    <link:calculationArc order="27" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapAdditionalPaidInCapital" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaapRetainedEarningsAccumulatedDeficit" />
    <link:calculationArc order="28" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapRetainedEarningsAccumulatedDeficit" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaapLiabilitiesAndStockholdersEquity" />
    <link:calculationArc order="29" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapLiabilities" xlink:type="arc" weight="1" />
    <link:calculationArc order="30" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapStockholdersEquity" xlink:type="arc" weight="1" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/CondensedConsolidatedBalanceSheetsParenthetical" xlink:title="110201 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/CondensedConsolidatedStatementsOfOperationsUnaudited" xlink:title="124100 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsAndExpenses" xlink:label="loc_us-gaapCostsAndExpenses" />
    <link:loc xlink:type="locator" xlink:href="btbd-20260628.xsd#btbd_FoodAndPaperCosts" xlink:label="loc_btbdFoodAndPaperCosts" />
    <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCostsAndExpenses" xlink:to="loc_btbdFoodAndPaperCosts" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LaborAndRelatedExpense" xlink:label="loc_us-gaapLaborAndRelatedExpense" />
    <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCostsAndExpenses" xlink:to="loc_us-gaapLaborAndRelatedExpense" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OccupancyNet" xlink:label="loc_us-gaapOccupancyNet" />
    <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCostsAndExpenses" xlink:to="loc_us-gaapOccupancyNet" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherCostAndExpenseOperating" xlink:label="loc_us-gaapOtherCostAndExpenseOperating" />
    <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCostsAndExpenses" xlink:to="loc_us-gaapOtherCostAndExpenseOperating" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationAndAmortization" xlink:label="loc_us-gaapDepreciationAndAmortization" />
    <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCostsAndExpenses" xlink:to="loc_us-gaapDepreciationAndAmortization" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaapGeneralAndAdministrativeExpense" />
    <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCostsAndExpenses" xlink:to="loc_us-gaapGeneralAndAdministrativeExpense" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaapOperatingIncomeLoss" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues" xlink:label="loc_us-gaapRevenues" />
    <link:calculationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_us-gaapRevenues" xlink:type="arc" weight="1" />
    <link:calculationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_us-gaapCostsAndExpenses" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MarketableSecuritiesUnrealizedGainLoss" xlink:label="loc_us-gaapMarketableSecuritiesUnrealizedGainLoss" />
    <link:calculationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_us-gaapMarketableSecuritiesUnrealizedGainLoss" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RealizedInvestmentGainsLosses" xlink:label="loc_us-gaapRealizedInvestmentGainsLosses" />
    <link:calculationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_us-gaapRealizedInvestmentGainsLosses" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherInterestAndDividendIncome" xlink:label="loc_us-gaapOtherInterestAndDividendIncome" />
    <link:calculationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_us-gaapOtherInterestAndDividendIncome" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaapInterestExpense" />
    <link:calculationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_us-gaapInterestExpense" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaapOtherNonoperatingIncomeExpense" />
    <link:calculationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_us-gaapOtherNonoperatingIncomeExpense" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaapIncomeLossFromEquityMethodInvestments" />
    <link:calculationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_us-gaapIncomeLossFromEquityMethodInvestments" xlink:type="arc" weight="1" />
    <link:calculationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_us-gaapOperatingIncomeLoss" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaapNetIncomeLoss" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaapIncomeTaxExpenseBenefit" />
    <link:calculationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapIncomeTaxExpenseBenefit" xlink:type="arc" weight="-1" />
    <link:calculationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:type="arc" weight="1" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/CondensedConsolidatedStatementsOfShareholdersEquityUnaudited" xlink:title="148600 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS EQUITY (Unaudited)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited" xlink:title="170000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaapDepreciationDepletionAndAmortization" />
    <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapDepreciationDepletionAndAmortization" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="btbd-20260628.xsd#btbd_AmortizationOfDebtIssuancePremiumIncludedInInterestExpense" xlink:label="loc_btbdAmortizationOfDebtIssuancePremiumIncludedInInterestExpense" />
    <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_btbdAmortizationOfDebtIssuancePremiumIncludedInInterestExpense" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaapShareBasedCompensation" />
    <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapShareBasedCompensation" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MarketableSecuritiesUnrealizedGainLoss" xlink:label="loc_us-gaapMarketableSecuritiesUnrealizedGainLoss" />
    <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapMarketableSecuritiesUnrealizedGainLoss" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RealizedInvestmentGainsLosses" xlink:label="loc_us-gaapRealizedInvestmentGainsLosses" />
    <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapRealizedInvestmentGainsLosses" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaapIncomeLossFromEquityMethodInvestments" />
    <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncomeLossFromEquityMethodInvestments" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryWriteDown" xlink:label="loc_us-gaapInventoryWriteDown" />
    <link:calculationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapInventoryWriteDown" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="btbd-20260628.xsd#btbd_NoncashOperatingLeaseExpense" xlink:label="loc_btbdNoncashOperatingLeaseExpense" />
    <link:calculationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_btbdNoncashOperatingLeaseExpense" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInReceivables" xlink:label="loc_us-gaapIncreaseDecreaseInReceivables" />
    <link:calculationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInReceivables" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaapIncreaseDecreaseInInventories" />
    <link:calculationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInInventories" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaapIncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" />
    <link:calculationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaapIncreaseDecreaseInAccountsPayable" />
    <link:calculationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInAccountsPayable" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="loc_us-gaapIncreaseDecreaseInAccruedLiabilities" />
    <link:calculationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInAccruedLiabilities" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="loc_us-gaapIncreaseDecreaseInOtherOperatingAssets" />
    <link:calculationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInOtherOperatingAssets" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaapProfitLoss" />
    <link:calculationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapProfitLoss" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:label="loc_us-gaapProvisionForDoubtfulAccounts" />
    <link:calculationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapProvisionForDoubtfulAccounts" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaapPaymentsToAcquirePropertyPlantAndEquipment" />
    <link:calculationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaapPaymentsToAcquirePropertyPlantAndEquipment" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="loc_us-gaapProceedsFromSaleOfPropertyPlantAndEquipment" />
    <link:calculationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaapProceedsFromSaleOfPropertyPlantAndEquipment" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForAdvanceToAffiliate" xlink:label="loc_us-gaapPaymentsForAdvanceToAffiliate" />
    <link:calculationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaapPaymentsForAdvanceToAffiliate" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireMarketableSecurities" xlink:label="loc_us-gaapPaymentsToAcquireMarketableSecurities" />
    <link:calculationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaapPaymentsToAcquireMarketableSecurities" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:label="loc_us-gaapProceedsFromSaleAndMaturityOfMarketableSecurities" />
    <link:calculationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaapProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="btbd-20260628.xsd#btbd_PaymentToAcquireInventory" xlink:label="loc_btbdPaymentToAcquireInventory" />
    <link:calculationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_btbdPaymentToAcquireInventory" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="btbd-20260628.xsd#btbd_ProceedsFromSaleOfOtherAssetsOne" xlink:label="loc_btbdProceedsFromSaleOfOtherAssetsOne" />
    <link:calculationArc order="24" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_btbdProceedsFromSaleOfOtherAssetsOne" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="loc_us-gaapProceedsFromStockOptionsExercised" />
    <link:calculationArc order="25" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapProceedsFromStockOptionsExercised" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaapRepaymentsOfLongTermDebt" />
    <link:calculationArc order="26" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapRepaymentsOfLongTermDebt" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentOfFinancingAndStockIssuanceCosts" xlink:label="loc_us-gaapPaymentOfFinancingAndStockIssuanceCosts" />
    <link:calculationArc order="27" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapPaymentOfFinancingAndStockIssuanceCosts" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:label="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" />
    <link:calculationArc order="28" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:type="arc" weight="1" />
    <link:calculationArc order="29" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:type="arc" weight="1" />
    <link:calculationArc order="30" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:type="arc" weight="1" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/SummaryOfSignificantAccountingPolicies" xlink:title="995411 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/IntangibleAssets" xlink:title="995412 - Disclosure - INTANGIBLE ASSETS" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/PropertyAndEquipment" xlink:title="995413 - Disclosure - PROPERTY AND EQUIPMENT" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/AccruedExpenses" xlink:title="995414 - Disclosure - ACCRUED EXPENSES" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/LongTermDebt" xlink:title="995415 - Disclosure - LONG TERM DEBT" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/StockBasedCompensation" xlink:title="995416 - Disclosure - STOCK BASED COMPENSATION" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/LEASES" xlink:title="995417 - Disclosure - LEASES" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/ShareholdersEquity" xlink:title="995418 - Disclosure - SHAREHOLDERS EQUITY" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/RelatedPartyTransactions" xlink:title="995419 - Disclosure - RELATED PARTY TRANSACTIONS" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/CONTINGENCIES" xlink:title="995420 - Disclosure - CONTINGENCIES" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:title="995421 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/SummaryOfSignificantAccountingPoliciesTables" xlink:title="995422 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/IntangibleAssetsTables" xlink:title="995423 - Disclosure - INTANGIBLE ASSETS (Tables)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/PropertyAndEquipmentTables" xlink:title="995424 - Disclosure - PROPERTY AND EQUIPMENT (Tables)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/AccruedExpensesTables" xlink:title="995425 - Disclosure - ACCRUED EXPENSES (Tables)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/LongTermDebtTables" xlink:title="995426 - Disclosure - LONG TERM DEBT (Tables)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/StockBasedCompensationTables" xlink:title="995427 - Disclosure - STOCK BASED COMPENSATION (Tables)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/LeasesTables" xlink:title="995428 - Disclosure - LEASES (Tables)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/RelatedPartyTransactionTables" xlink:title="995429 - Disclosure - RELATED PARTY TRANSACTION (Tables)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/SummaryOfSignificantAccountingPoliciesDetails" xlink:title="995430 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/SummaryOfSignificantAccountingPoliciesDetailsNarrative" xlink:title="995431 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/IntangibleAssetsDetails" xlink:title="995432 - Disclosure - INTANGIBLE ASSETS (Details)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/IntangibleAssetsDetailsNarrative" xlink:title="995433 - Disclosure - INTANGIBLE ASSETS (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/PropertyAndEquipmentDetails" xlink:title="995434 - Disclosure - PROPERTY AND EQUIPMENT (Details)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/PropertyAndEquipmentDetailsNarrative" xlink:title="995435 - Disclosure - PROPERTY AND EQUIPMENT (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/AccruedExpensesDetails" xlink:title="995436 - Disclosure - ACCRUED EXPENSES (Details)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/LongtermDebtDetails" xlink:title="995437 - Disclosure - LONGTERM DEBT (Details)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/StockbasedCompensationDetails" xlink:title="995438 - Disclosure - STOCKBASED COMPENSATION (Details)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/StockbasedCompensationDetailsNarrative" xlink:title="995439 - Disclosure - STOCKBASED COMPENSATION (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/LeasesDetails" xlink:title="995440 - Disclosure - LEASES (Details)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/LeasesDetailsNarrative" xlink:title="995441 - Disclosure - LEASES (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/ShareholdersEquityDetailsNarrative" xlink:title="995442 - Disclosure - SHAREHOLDERS EQUITY (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/RelatedPartyTransactionDetails" xlink:title="995443 - Disclosure - RELATED PARTY TRANSACTION (Details)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/RelatedPartyTransactionsDetailsNarrative" xlink:title="995444 - Disclosure - RELATED PARTY TRANSACTIONS (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://brand.bt.com/role/ContingenciesDetailsNarrative" xlink:title="995445 - Disclosure - CONTINGENCIES (Details Narrative)" />
</link:linkbase>
