Exhibit 10.57

                           CONVERTIBLE PROMISSORY NOTE
                         MENDOCINO BREWING COMPANY, INC.
- --------------------------------------------------------------------------------
Name of Issuer:  Mendocino Brewing Company, Inc.        Dated:  July 1, 2001
Maturity Date:  December 31, 2002
- --------------------------------------------------------------------------------

          1. Promise.  Mendocino Brewing Company, Inc., a California corporation
     having its principal office at 1601 Airport Road,  Ukiah,  California 95482
     and any successor (the "Company"),  for value received,  promises to pay to
     United  Breweries  of  America  Inc.,  a  Delaware  corporation  or to  its
     registered  successors  or assigns (the  "Holder") the principal sum of Six
     Thousand Two Hundred  Seventy-Nine Dollars and Fifty-Four Cents ($6,279.54)
     on presentation and surrender of this Convertible Note ("Note") on December
     31, 2002 (the "Maturity  Date"),  and to pay interest on that principal sum
     at a rate equal to the lesser of (i) one and one-half  percent  (1.50%) per
     annum above the prime rate offered from time to time by the Bank of America
     in San Francisco,  California, or (ii) ten percent (10%). Interest payments
     shall be paid  quarterly  on the  first day of the  months of April,  July,
     October,  and  January  of each  year.  Company  may  use any of the  funds
     borrowed  from Holder for any  corporate  purposes  of  Company,  including
     paying obligations owed by Company to Holder.

          2. Form of  Payment.  All  payments  under  this Note shall be made in
     lawful money of the United States of America. The Company waives diligence,
     presentment,   protest,  demand  and  notice  of  protest,   dishonor,  and
     nonpayment of this Note.

          3. Conversion/Redemption/Renewal.

               (a) The Holder has the right, at the holder's option, at any time
     on or after the Maturity  Date,  to convert all or any portion of this Note
     into fully paid and  nonassessable  shares of common stock ("Common Stock")
     of the Company at the rate of one share of such  Common  Stock for each One
     Dollar and 50/100 ($1.50) (the "Conversion  Rate") principal amount of this
     Note and any accrued but unpaid interest. The Holder agrees that all shares
     of Common Stock of the Company,  issued by the Company upon the  conversion
     of all or any part of this Note shall be restricted  securities  within the
     meaning of Rule 144(a) of the  Securities  Act of 1933.  The Holder further
     agrees that any shares of Common Stock  acquired by means of any conversion
     as set forth herein shall be further restricted by the terms and conditions
     set forth in that certain Shareholders' Agreement,  dated October 24, 1997,
     by and among the Company,  Holder,  and the Original Partners (as such term
     is defined in the Shareholders' Agreement).

               (b) The  conversion  right set forth in this Section 3 is subject
     to any

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     adjustment of the Conversion Rate set forth in Section 5 and Section 6, and
     is only  exercisable  upon the surrender of this Note for conversion at the
     office or agency to be maintained by the Company accompanied by instruments
     of transfer,  in form  satisfactory  to the Company,  duly  executed by the
     registered holder. No fractional shares are issuable on any conversion, but
     in lieu of  issuing  fractional  shares  the  Company  shall  pay for  such
     fractional shares in cash.

               (c) At any time prior to  seventeen  (17) months from the date of
     this Note, the Holder may provide  written notice to the Company  requiring
     the Company to commence repay of the outstanding  principal balance of this
     Note,  together with any accrued but unpaid interest thereon, to Holder. In
     such case,  commencing on the Maturity Date, Company shall pay Holder equal
     monthly installments of principal,  together with any unpaid interest, over
     a period of five (5) years until all amounts due hereunder  shall be repaid
     in full.

               (d) If  Holder  does  not  convert  or  redeem  any or all of the
     principal amount of the Note into Common Stock on the Maturity Date, Holder
     has the right to extend the term of this Note for a period of time mutually
     agreed  upon  between  Holder  and the  Company.  At any time  during  such
     extension period, Holder shall have the right to convert all or any part of
     the  outstanding  principal  amount of the Note  plus  accrued  and  unpaid
     interest into Common Stock as set forth in this Section 3. Moreover, at any
     time during such extension  period,  Holder shall have the right to require
     the Company to repay all or any part of the outstanding  principal  balance
     of this Note,  together with any accrued but unpaid  interest  thereon,  to
     Holder within sixty (60) days.

          4. Company  Redemption.  Prior to the Maturity Date,  this Note may be
     redeemed by the Company,  in whole or in part, at any time after sixty (60)
     days written notice ("Redemption Notice") to Holder. During such sixty (60)
     day period,  Holder  shall have the right to convert all or any part of the
     outstanding  principal  amount of the Note plus accrued and unpaid interest
     into  Common  Stock,  as set forth in Section 3. If Holder does not convert
     all  outstanding  amounts  into  Common  Stock,  the Company may redeem any
     remaining  amounts at any time during a thirty  (30) day period  commencing
     with the date of  expiration  of the sixty (60) day period  provided for in
     the  Redemption  Notice.  Thereafter,  Company shall be required to provide
     Holder with a new Redemption Notice, and Holder shall have a new sixty (60)
     day  period  within  which to  convert  all or any part of the  outstanding
     principal  amounts plus accrued and unpaid  interest into Common Stock,  as
     set forth in Section 3.

          5. Anti-Dilution.

               (a) If at any  time  there  is a  capital  reorganization  of the
     Company's  Common  Stock,  including  any  combination,   reclassification,
     exchange,  or  subdivision  of  shares,  a merger or  consolidation  of the
     Company  with  or  into  another  corporation,   or  the  sale  of  all  or
     substantially all the Company's  properties and assets as, or substantially
     as, an entirety to another person,  then, as a part of such reorganization,
     merger, consolidation, or sale, lawful provision shall be made so that



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     Holder shall  thereafter be entitled to receive on conversion of this Note,
     during the period  specified  in this Note,  the number of shares of Common
     Stock of the Company, or of the successor  corporation  resulting from such
     merger or consolidation,  to which a holder of the Common Stock deliverable
     on  conversion  of this Note would have been entitled on that event if this
     Note had been converted  immediately  before that event.  In any such case,
     appropriate  adjustment (as determined by the Company's board of directors)
     shall  be made in  applying  this  Note to the  rights  and the  percentage
     interests of Holder after the  reorganization,  merger,  consolidation,  or
     sale to the end that  this Note  (including  adjustment  of the  Conversion
     Rate) shall be applicable  after that event,  as near as reasonably may be,
     in relation to the shares of Common Stock  deliverable  after that event on
     conversion of this Note. The Company shall, not later than thirty (30) days
     prior to making such adjustment,  give written notice ("Notice") by courier
     to Holder at the address of Holder shown on the Company's books.

               (b) Any Notice that is sent  pursuant  to Section  5(a) shall set
     forth,  in reasonable  detail,  the event  requiring the adjustment and the
     method  by which the  adjustment  was  calculated  and  shall  specify  the
     Conversion  Rate then in effect after the  adjustment  and the increased or
     decreased  number of shares of Common Stock to be received upon  conversion
     of this Note. When appropriate, advance notice may be given and included as
     part of the notice required under other provisions of this Note.

          6. Conversion Rate Protection.

               (a) If at any time, or from time to time,  the Company  issues or
     sells shares of Common Stock without  consideration  or for a consideration
     per share less than the Conversion Rate in effect  immediately  before that
     issue or sale, then and in each such case:

                    (i) the  Conversion  Rate then in effect and the  Conversion
     Rate  applicable  for any  subsequent  period  shall be adjusted to a price
     (calculated  to the nearest cent)  determined  by dividing:  (y) the sum of
     (aa) the number of shares of Common Stock  outstanding  immediately  before
     that issue or sale multiplied by the Conversion Rate in effect  immediately
     before that issue or sale, plus (bb) the consideration, if any, received by
     the  Company  on that  issue or sale,  by (z) the  number  of shares of the
     Company's Common Stock  outstanding  immediately  after that issue or sale;
     and

                    (ii) Holder shall after that issue or sale, on conversion of
     this Note,  be  entitled  to receive  the number of shares of Common  Stock
     equal to the number of shares that would otherwise,  but for the adjustment
     provided for in Section 6(a)(i), be issuable on such conversion  multiplied
     by a fraction, the numerator of which is the Conversion Rate then in effect
     and the denominator of which is the Conversion  Rate in effect  immediately
     after  the  adjustment  provided  for in  Section  6(a)(i)  on the  date of
     conversion.  No such  adjustment  shall be made in an amount less than Five
     Cents  ($0.05),  but any such  amount  shall be carried  forward  and given
     effect in the next adjustment, if any.



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               (b) If the Company (i) grants any rights or options to  subscribe
     for, purchase,  or otherwise acquire shares of Common Stock, or (ii) issues
     or sells any  security,  other than this Note,  which is  convertible  into
     shares of Common Stock,  then the price per share of Common Stock  issuable
     on  the  exercise  of the  rights  or  options  or  the  conversion  of the
     securities shall be calculated by dividing:  (y) the total amount,  if any,
     received or receivable by the Company as consideration  for the granting of
     the rights or options or the issue or sale of the  convertible  securities,
     plus the minimum  aggregate amount of additional  consideration  payable to
     the Company on exercise of the convertible  securities,  by (z) the maximum
     number of shares of Common Stock issuable on the exercise or conversion.

                    (i) If the price per  share so  calculated  is less than the
     Conversion  Rate of this Note in effect  immediately  before  the rights or
     options are granted or the  convertible  securities are issued or sold, the
     granting  or issue or sale shall be  considered  to be an issue or sale for
     cash of the  maximum  number  of  shares of  Common  Stock so  issuable  on
     exercise  or  conversion  at the  price  per share  determined  under  this
     provision,  and the  Conversion  Rate of this  Note  shall be  adjusted  as
     provided above to reflect (on the basis of that determination) the issue or
     sale.  No  further  adjustment  of the  Conversion  Rate shall be made as a
     result of the actual  issuance of shares of Common Stock on the exercise of
     any such  rights  or  options  or the  conversion  of any such  convertible
     securities.

                    (ii) If such rights or options or convertible  securities by
     their  terms  provide,  with  the  passage  of time or  otherwise,  for any
     increase in the amount of additional  consideration  payable to the Company
     or any  decrease in the number of shares of Common  Stock  issuable on such
     exercise or exchange (by change of rate or otherwise),  the Conversion Rate
     shall, when each such increase or decrease becomes effective, be readjusted
     to reflect the increase or decrease as far as it affects rights of exercise
     or conversion that have not expired before that time.

                    (iii) If, on the expiration of such rights or options or the
     rights of conversion of such convertible securities,  any of them shall not
     have been exercised,  the Conversion Rate shall be readjusted and will then
     be the same as it would have been had it  originally  been adjusted (or had
     the  original  adjustment  not been  required,  as the case may be), on the
     basis that (y) the only shares of Common Stock so issued were the shares of
     Common  Stock,  if any,  actually  issued or sold on the  exercise  of such
     rights or options or rights of conversion of such  convertible  securities,
     and (z) such shares of Common  Stock,  if any,  were issued or sold for the
     consideration  actually  received by the Company on such  exercise plus the
     consideration,  if any,  actually  received by the Company for granting all
     such  rights or options or for  issuing  or  selling  all such  convertible
     securities.

                    (iv) No  adjustment  of the  Conversion  Rate as provided in
     this Section 6(b) shall occur upon the granting or issuance of stock, stock
     options,  or  warrants  to  employees  or  directors  of the Company in the
     aggregate  amount of less than six  hundred  thousand  (600,000)  shares of
     Common Stock.



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          7. Subordination.

               (a)  Upon the  written  agreement  of  Holder,  this  Note may be
     subordinated  to any or all debt  owed by the  Company  to banks  and other
     financial  institutions,  other than to the extent debt to any such bank or
     financial  institution  involves  the  issuance of shares of the  Company's
     stock or notes,  warrants,  options or any other security  convertible into
     such stock.

               (b) The payment of the indebtedness  evidenced by this instrument
     is  subordinated  to the payment of the "Senior Debt" defined and described
     in the  Subordination  Agreement,  dated as of September 24, 1998,  between
     United Breweries of America Inc. and the CIT Group/Credit Finance, Inc., as
     amended by that certain Amendment to Subordination  Agreement,  dated as of
     June 22, 1999, and reference is made to such Agreement for a full statement
     of the terms and conditions of such subordination.

               (c) The payment of the indebtedness  evidenced by this instrument
     is  subordinated  to the payment of the "Senior Debt" defined and described
     in the  Subordination  Agreement,  dated on or  about  November  15,  1998,
     between United Breweries of America Inc. and the Savings Bank of Mendocino,
     Inc.,  and reference is made to such  Agreement for a full statement of the
     terms and conditions of such subordination.

          8.  Enforcement.  The Company agrees to reimburse Holder for all costs
     of collection  or  enforcement  of this Note,  whether or not suit is filed
     (including,  but not limited to,  reasonable  attorney  fees),  incurred by
     Holder.

          9.  Governing  Law.  This Note shall be governed by and  construed  in
     accordance  with the  laws,  without  regard  to the laws as to  choice  or
     conflict of laws, of the State of California.

          10.  Default.  If Company fails to pay any installment of principal or
     interest when due,  then,  or at any time during such  default,  the entire
     amount of the unpaid  principal  and  interest  shall,  at the  election of
     Holder, become immediately due and payable.

          11.  Waiver.  No previous  waiver and no failure or delay by Holder in
     acting with respect to the terms of this Note shall  constitute a waiver of
     any subsequent  breach,  default or failure of condition under this Note. A
     waiver of any term of this Note must be in writing  and shall be limited to
     the express written terms of such waiver.  No delay or omission on the part
     of Holder in exercising any right under this Note shall operate as a waiver
     of such right or of any other right.

          12.  Reservation of Stock.  The Company  covenants that it will at all
     times reserve and keep available, solely for issuance on conversion of this
     Note,  all shares of Common Stock from time to time  issuable upon exercise
     of this Note.

          13. Replacement.  Upon receipt of evidence reasonably  satisfactory to
     the


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     Company, of the loss, theft, destruction, or modification of this Note and,
     in the event of such occurrence,  on delivery of an indemnity  agreement or
     Note  reasonably  satisfactory  in form and amount to the Company or in the
     case of mutilation, on surrender and cancellation of this Note, the Company
     at its expense will  execute and deliver,  in lieu of this Note, a new Note
     of like tender.

          14.  Transfer.  NO SALE OR  TRANSFER  OF THIS NOTE SHALL BE  EFFECTIVE
     UNLESS AND UNTIL ALL OF THE FOLLOWING STEPS ARE COMPLIED WITH:

               (a) The transferor  and the transferee  shall execute the form of
     Transfer  Statement  attached  to this Note (or a similar  statement  which
     shall then be attached to this Note);

               (b) This Note and the executed Transfer Statement,  together with
     a United States Internal  Revenue Service Form W-8  "Certificate of Foreign
     Status"  or a Form W-9  "Request  for  Taxpayer  Identification  Number and
     Certification" completed and executed by the transferee, shall be delivered
     to the Company at the Company's address as provided above; and

               (c) If the Company is satisfied that the information contained in
     the Transfer Statement is consistent with the information  contained in the
     completed  and executed Form W-8 or W-9, as  applicable,  the Company shall
     enter the transfer on a Note Holder  Ledger  maintained  by the Company for
     this purpose.

Any  purported  transfer  with respect to which all of the above steps have note
been complied with shall be null and void and of no force or effect.

          15.  Entire  Agreement;  Written  Modification  Only.  This  Agreement
     contains the entire agreement of the parties, and constitutes the complete,
     final and  exclusive  embodiment  of their  agreement  with  respect to its
     subject matter. This Agreement supersedes any and all prior correspondence,
     arrangements,  representations and understandings, whether written or oral,
     express or implied,  with respect to its subject matter. This Agreement may
     not be modified  except by a written  agreement,  which  specifically  sets
     forth each  modification and is signed by a duly authorized  representative
     of both  parties.  This  Agreement is executed  without  reliance  upon any
     promise,  warranty  or  representation  by the  parties  or  any  of  their
     representatives, other than such promises, warranties or representations as
     are expressly contained in this Agreement.

          16. Severability. If any provision of this Agreement is deemed or held
     invalid  or  unenforceable  in  whole  or in  part,  for any  reason,  that
     provision shall be deemed severed from the remainder of this Agreement, and
     shall in no way  affect or impair the  validity  or  enforceability  of any
     portion or all of this  Agreement,  which  otherwise  shall  remain in full
     force and effect.


IN WITNESS WHEREOF,  the Company has caused this Convertible Note to be executed
in its corporate name by the signature of its president and secretary.


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                                 MENDOCINO BREWING COMPANY, INC., a California
                                 corporation

                                 By:      /s/ Yashpal Singh
                                       -------------------------------------
                                           Yashpal Singh
                                 Its:  President


                                 By:      /s/ N. Mahadevan
                                       -------------------------------------
                                           N. Mahadevan
                                 Its:  Chief Financial Officer



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                                CONVERSION NOTICE


Conversion Notice To:  MENDOCINO BREWING COMPANY, INC.


     The undersigned holder of this Note, hereby irrevocably exercises the
option to convert this Note or the portion of it designated below into shares of
Common Stock of the Company, in accordance with the terms of the Note, and
directs that the shares issuable and deliverable on the conversion, together
with any check in payment of fractional shares, be issued and delivered to the
undersigned unless a different name is specified below. If shares of Common
Stock are to be issued in the name of anyone other than the undersigned, the
undersigned will pay all transfer taxes payable on this conversion and issuance.


Dated:
      ---------------------------            ------------------
                                             Signature


If the shares are to be issued               Portion to be converted (in
other than to a registered                   multiples) of $1,000 if less
holder, print name, address,                 than all:
city, state less and zip code                $
of issuee:                                    ---------------------------




                                             Social Security Number of
                                             other identifying number of
                                             issuers:




  ---------------------------------------    ----------------------------

  --------------------------------------

  --------------------------------------

  --------------------------------------






 Notice: The signature of these instructions to convert must correspond with the
          name as written on the face of this Note in every particular,
            without alteration, enlargement, or any change whatsoever





                               TRANSFER STATEMENT


NOTICE TO:   MENDOCINO BREWING COMPANY, INC.

     FOR VALUE RECEIVED, the undersigned, the holder of that certain Convertible
Note initially executed on the Effective Date (as defined below) by Mendocino
Brewing Company, Inc. (the "Company") to the Initial Holder (as defined below)
in the Face Value set forth below (the "Note"), hereby sells, assigns, transfers
and conveys all of the rights of the undersigned under the Note, subject to the
terms of the Note, unto the Transferee (as described below):

  Name of Transferee                Address                Face Value of Note
  ------------------                -------                ------------------


The following terms have the following meanings:

Effective Date:                , 2001
                --------------
Initial Holder:
                --------------------------


Dated:                                    TRANSFEROR:
      ------------------------------      [Name of Transferor]

                                         By:
                                               --------------------------------

                                         Name:
                                               --------------------------------

                                         Its:
                                               --------------------------------


ACKNOWLEDGMENT OF THE COMPANY:


MENDOCINO BREWING COMPANY, INC.

By:
      --------------------------------

Name:
      --------------------------------

Its:
      --------------------------------