Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

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Item 1.

(a)

Name of Issuer

         The Boston Beer Company, Inc.

(b)

Address of Issuer's Principal Executive Offices

75 Arlington Street
Boston, MA 02116

Item 2.

(a)

Name of Person Filing

C. James Koch

(b)

Address of Principal Business Office or, if none, Residence

75 Arlington Street
Boston, MA 02116

(c)

Citizenship

U.S.A.

(d)

Title of Class of Securities

Class A Common Stock

(e)

CUSIP Number

100557107

Item 3.

If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a)

[    ]

Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b)

[    ]

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c)

[    ]

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d)

[    ]

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8).

(e)

[    ]

An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);

(f)

[    ]

An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);

(g)

[    ]

A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h)

[    ]

A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

[    ]

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

[    ]

Group, in accordance with §240.13d-1(b)(1)(ii)(J).

Item 4.

Ownership.

(a)

Amount beneficially owned:

         As of December 31, 2004, Mr. Koch owned directly 385,520 shares of Issuer's Class A Common Stock and had the right to acquire directly (i) 4,107,355 shares of the Issuer's Class A Common Stock upon the conversation of an equal number of shares of the Issuer's Class B Common Stock held by Mr. Koch, (ii) 14,030 shares of the Issuer's Class A Common Stock upon the exercise of stock options which were vested as of December 31, 2004 or which would vest within 60 days thereof, and (iii) 3,399 shares of the Issuer's Class A Common Stock upon the vesting of certain restricted stock grants within 60 days of December 31, 2004, and had the right to vote an additional 6,255 unvested shares received in restricted stock grants. Further, Mr. Koch has sole voting and investment power over 32,456 shares of the Issuer's Class A Common Stock held by him as custodian for the benefit of his children, as to which shares Mr. Koch disclaims any beneficial ownership. In addition, 187,835 shares of the Issuer's Class A Common Stock are held by a trust in which Mr. Koch's children have a pecuniary interest, as to which shares Mr. Koch disclaims any beneficial ownership.

(b)

Percent of class:

         Mr. Koch beneficially owns 32.0% of the Issuer's Class A Common Stock. In addition, Mr. Koch could be deemed to be a beneficial owner, for purposes of this Schedule 13G, of an additional 32,456 shares of Class A Common Stock of the Issuer as described in Item 4(a) above. Beneficial ownership of such shares would constitute beneficial ownership of an additional 0.2% of the Issuer's Class A Common Stock.

(c)

Number of shares as to which the person has:

(i)

Sole power to vote or to direct the vote

         4,590,985

(ii)

Shared power to vote or to direct the vote

         0

(iii)

Sole power to dispose or to direct the disposition of

         4,584,730

(iv)

Shared power to dispose or to direct the disposition of

         0

Item 5.

Ownership of Five Percent or Less of a Class

          If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [    ].

Instruction: Dissolution of a group requires a response to this item.

         Not applicable.

Item 6.

Ownership of More than Five Percent on Behalf of Another Person

                  Not applicable.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company

                  Not applicable.

Item 8.

Identification and Classification of Members of the Group

                  Not applicable.

Item 9.

Notice of Dissolution of Group

Item 10.

Certification

        After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

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