

<!-- RR Donnelley Xcelerate Taxonomy Schema, based on XBRL 2.1  http://www.edgar-online.com/ -->
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<!-- Round: 919e02e2-c2f2-4e4d-b150-e545a4fdee93 -->
<!-- Creation date: 2013-10-29T21:31:17Z -->
<!-- Copyright (c) 2005-2013 R.R. Donnelley & Sons Company All Rights Reserved. -->
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        <link:definition>109 - Disclosure - Net Income per Share</link:definition>
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        <link:definition>110 - Disclosure - Comprehensive Income or Loss</link:definition>
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        <link:definition>112 - Disclosure - Income Taxes</link:definition>
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        <link:definition>113 - Disclosure - Debt and Capital Lease Obligations</link:definition>
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        <link:definition>114 - Disclosure - Fair Value Measures</link:definition>
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        <link:definition>115 - Disclosure - Brewery Acquisition</link:definition>
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        <link:definition>129 - Disclosure - Net Income per Share - Additional Information (Detail)</link:definition>
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        <link:definition>130 - Disclosure - Commitments and Contingencies - Additional Information (Detail)</link:definition>
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        <link:definition>132 - Disclosure - Debt and Capital Lease Obligations - Additional Information (Detail)</link:definition>
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        <link:definition>133 - Disclosure - Fair Value Measurement of Assets and Liabilities on Recurring Basis (Detail)</link:definition>
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        <link:definition>136 - Disclosure - Brewery Acquisition - Additional Information (Detail)</link:definition>
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  <element name="ConversionOfClassBCommonStockToClassACommonStockShares" id="sam_ConversionOfClassBCommonStockToClassACommonStockShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CurrentLiabilitiesMember" id="sam_CurrentLiabilitiesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DebtAndCapitalLeaseObligationsLineItems" id="sam_DebtAndCapitalLeaseObligationsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DebtAndCapitalLeaseObligationsTable" id="sam_DebtAndCapitalLeaseObligationsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="DocumentAndEntityInformationAbstract" id="sam_DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EarningsPerShareDisclosureLineItems" id="sam_EarningsPerShareDisclosureLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EarningsPerShareDisclosureTable" id="sam_EarningsPerShareDisclosureTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="EnvironmentalMattersMember" id="sam_EnvironmentalMattersMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems" id="sam_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" id="sam_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="FinancialInstrumentsLineItems" id="sam_FinancialInstrumentsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FinancialInstrumentsTable" id="sam_FinancialInstrumentsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="GlassBottlesMember" id="sam_GlassBottlesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="HopsAndMaltMember" id="sam_HopsAndMaltMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="HopsMember" id="sam_HopsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ImpairmentOfLongLivedAssetsLineItems" id="sam_ImpairmentOfLongLivedAssetsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ImpairmentOfLongLivedAssetsTable" id="sam_ImpairmentOfLongLivedAssetsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="IncomeAllocatedToEquityInstrumentsOtherThanOptionNonvested" id="sam_IncomeAllocatedToEquityInstrumentsOtherThanOptionNonvested" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxesLineItems" id="sam_IncomeTaxesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxesTable" id="sam_IncomeTaxesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="IncomeTaxExaminationYearsSubjectToExamination" id="sam_IncomeTaxExaminationYearsSubjectToExamination" type="us-types:durationStringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxReturnExaminationPeriod" id="sam_IncomeTaxReturnExaminationPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncrementalCommonSharesAttributableToConversionOfCommonStock" id="sam_IncrementalCommonSharesAttributableToConversionOfCommonStock" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="KeyEmployeesMember" id="sam_KeyEmployeesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LeaseCommencementDate" id="sam_LeaseCommencementDate" type="xbrli:dateItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LongTermPerformanceBasedShareAwardsMember" id="sam_LongTermPerformanceBasedShareAwardsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetIncomeLossAllocatedToEquityInstrumentsOtherThanOptionNonvested" id="sam_NetIncomeLossAllocatedToEquityInstrumentsOtherThanOptionNonvested" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NetProceedsFromSaleOfInvestmentShares" id="sam_NetProceedsFromSaleOfInvestmentShares" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NonEmployeeDirectorStockOptionMember" id="sam_NonEmployeeDirectorStockOptionMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OrganizationAndBasisOfPresentationLineItems" id="sam_OrganizationAndBasisOfPresentationLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OrganizationAndBasisOfPresentationTable" id="sam_OrganizationAndBasisOfPresentationTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="OtherCommitmentsRelatedToBreweryAcquisition" id="sam_OtherCommitmentsRelatedToBreweryAcquisition" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherPurchaseCommitmentMember" id="sam_OtherPurchaseCommitmentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfNetRevenue" id="sam_PercentageOfNetRevenue" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PercentageOfProductionVolumes" id="sam_PercentageOfProductionVolumes" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PerformanceBasedAwardsMember" id="sam_PerformanceBasedAwardsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProvisionForReductionOfDoubtfulAccounts" id="sam_ProvisionForReductionOfDoubtfulAccounts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReceiptOfGovernmentGrantsForFacilitiesExpansion" id="sam_ReceiptOfGovernmentGrantsForFacilitiesExpansion" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RetentionPlanMember" id="sam_RetentionPlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfFairValueAssetsAndLiabilitiesForFinancialInstrumentsNotRecordedAtFairValueTableTextBlock" id="sam_ScheduleOfFairValueAssetsAndLiabilitiesForFinancialInstrumentsNotRecordedAtFairValueTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ServicePeriodForOtherCommitmentsRelatedToBreweryAcquisition" id="sam_ServicePeriodForOtherCommitmentsRelatedToBreweryAcquisition" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByPlanNameAxis" id="sam_ShareBasedCompensationArrangementByPlanNameAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
  <element name="ShareBasedCompensationArrangementByPlanNameDomain" id="sam_ShareBasedCompensationArrangementByPlanNameDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEmployeeInvestmentSharesPurchase" id="sam_ShareBasedCompensationArrangementByShareBasedPaymentAwardEmployeeInvestmentSharesPurchase" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardInvestmentSharesWeightedAverageGrantDateFairValue" id="sam_ShareBasedCompensationArrangementByShareBasedPaymentAwardInvestmentSharesWeightedAverageGrantDateFairValue" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsToVestInEachTranche" id="sam_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsToVestInEachTranche" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SpecialStockOptionPlanMember" id="sam_SpecialStockOptionPlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockOptionsAxis" id="sam_StockOptionsAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
  <element name="StockOptionsDomain" id="sam_StockOptionsDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageNumberOfBasicSharesOutstandingEquityInstrumentsOtherThanOptionNonvested" id="sam_WeightedAverageNumberOfBasicSharesOutstandingEquityInstrumentsOtherThanOptionNonvested" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageNumberOfSharesOutstandingBasicIncludingNonvestedParticipatingSecurities" id="sam_WeightedAverageNumberOfSharesOutstandingBasicIncludingNonvestedParticipatingSecurities" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
</schema>





