ETHANOL MARKETING AGREEMENT

<PAGE>
                                                                    EXHIBIT 10.2

                           ETHANOL MARKETING AGREEMENT

This Ethanol Marketing Agreement ("Agreement") is made and entered into as the
22nd day of February 2005 by and between Aventine Renewable Energy, Inc., a
Delaware corporation ("AREI) and VeraSun Fort Dodge, LLC, a Delaware corporation
("VeraSun Fort Dodge").

In consideration of the mutual terms and conditions contained herein, the
Parties agree as follows:

1.   Terms and Termination

     A.   The term of this Agreement shall commence on the first day of ethanol
          sales and continue for a primary term ending March 31, 2007 and
          thereafter, renewing for consecutive two (2) year terms, unless
          terminated by either party at the end of the primary term or any or
          any subsequent two (2) year anniversary thereof with at least six (6)
          months prior written notice.

     B.   In addition, this Agreement may be terminated under the circumstances
          set out below.

          (1). Termination for Intentional Misconduct. If either party engages
               in intentional misconduct reasonably likely to result in
               significant adverse consequences to the other party, the party
               harmed or likely to be harmed by the intentional misconduct may
               terminate this Agreement immediately, upon written notice to the
               party engaging in the intentional misconduct.

          (2). Termination for Uncured Breach. If one of the parties breaches
               the terms of this Agreement, the other party may give the
               breaching party a notice in writing which specifically sets out
               the nature and extent of the breach, and the steps that must be
               taken to cure the breach. After receiving the written notice, the
               party will than have thirty (30) days to cure the breach, if the
               breaching does not involve a failure to make any payments which
               are required by this Agreement.

               If breach involves lack of payment beyond the established
               delinquency period, as specified in this Agreement, VeraSun Fort
               Dodge may terminate this Agreement immediately and without prior
               written notice.

          (3). Change of Control. Based on a change of majority interest in
               AREI, VeraSun Fort Dodge shall have six (6) months to terminate


                                        1

<PAGE>

               this Agreement following the receipt of written notice regarding
               such change of ownership. AREI must notify VeraSun Fort Dodge of
               said event in writing within two (2) weeks of event. VeraSun Fort
               Dodge may terminate Agreement with (30) days written notice
               within said six (6) month period.

          (4). Termination by Mutual Written Agreement. This Agreement may also
               be terminated upon any terms and under any condition, which are
               mutually agreed upon in writing by AREI and VeraSun Fort Dodge.

          (5). Termination by Bankruptcy, etc. This Agreement may also be
               terminated immediately and without prior notice by a party as a
               result of the other party's bankruptcy, assignment for the
               benefit of creditors, admission in writing of its inability to
               pay debts generally, or its liquidation, insolvency or
               dissolution.

2.   Quantity and Quality

     A.   VeraSun Fort Dodge shall sell to AREI the total output of fuel grade
          ethanol ("Ethanol") produced at the VeraSun Fort Dodge, Iowa, facility
          ("Plant"), currently anticipated to be one hundred (110) million
          gallons per year. Ethanol shall be delivered FOB the Plant, and title
          shall pass as the Ethanol is loaded into transport vessels.

     B.   Such Ethanol shall meet or exceed all industry standards, including
          but not limited to ASTM D.4806 specifications and Magellan Pipeline
          Company specifications for E-Grade Denatured Fuel Ethanol

     C.   Ethanol produced at the Plant and marketed by VeraSun Fort Dodge,
          directly or indirectly, to the E-85 fuel market is excluded from this
          Agreement.

3.   AREI shall:

     A.   Purchase all of the Ethanol produced by VeraSun Fort Dodge, at the
          price outlined in Section 5;

     B.   Remit payment to VeraSun Fort Dodge for the Ethanol as provided in
          Section 5: and

     C.   Schedule all loads with VeraSun Fort Dodge.

     D.   Extend any alliance volume buying power of discounting to VeraSun Fort
          Dodge.

     E.   Extend railcar freight rates negotiated by AREI to VeraSun Fort Dodge.


                                        2

<PAGE>

     F.   Participate with VeraSun Fort Dodge in a monthly sales strategy call.

4.   VeraSun Fort Dodge shall:

     A.   Provide to AREI quarterly production forecasts, monthly updates, daily
          plant inventory balances and shipment information;

     B.   Provide to AREI specifications and certificates of analysis of the
          Ethanol produced;

     C.   Provide for a minimum of eight days storage on the VeraSun Fort Dodge
          premises;

     D.   Have meters that provide both gross and net 60 degrees Fahrenheit
          temperature compensated gallons; and

     E.   Establish and participate in monthly sales strategy meetings with
          AREI.

5.   Pricing and Commission

     B.   Sales Price. The sale price VeraSun Fort Dodge shall receive for its
          Ethanol shall be the Pooled Net Price, as defined below.

               "Pooled Net Price" shall mean the net sales per gallon calculated
               by subtracting the Pooled Costs on a per gallon basis from the
               Alliance Ethanol Average Market Price.

               "Alliance Ethanol Average Market Price" shall mean the monthly
               average price received by AREI for Pooled Market Alliance Volumes
               sold during such month on a per gallon basis.

               "Pooled Market Alliance Volumes" shall mean, with respect to any
               given period, aggregate fuel grade ethanol volumes purchased by
               AREI from all sellers who have agreed to receive the Pooled Net
               Price and aggregate fuel grade ethanol volumes produced by AREI
               during such period.

               "Pooled Costs" shall mean, with respect to any given period, all
               direct costs incurred by AREI in handling Pooled Market Alliance
               Volumes during such period, including by not limited to terminal
               lease charges, throughput charges, terminal shrinkage costs,
               freight charges, tariffs, costs of leasing railcar and trucks,
               government taxes and assessments, insurance, inspection fees,
               inventory carrying costs, purchased ethanol cost incurred due to
               lost production and other such costs, but excluding direct costs
               incurred in marketing such ethanol. AREI shall use commercially
               reasonable efforts to contain Pooled Costs so as to maximize the
               ultimate net price payable to VeraSun Fort Dodge for its Ethanol.


                                        3

<PAGE>
     D.   Commission. AREI shall deduct from the Pooled Net Price a commission
          equal to (**) percent (**) of the Pooled Net Price. The total
          commission shall not exceed (**) for the first (**) gallons of ethanol
          produced and sold to AREI during each twelve (12) calendar month
          period commencing on December 1st of each calendar year (the "12 Month
          Period") under this Agreement and under that certain Ethanol Marketing
          Agreement between AREI and VeraSun Energy Corporation, dated February
          21, 2005 (the "Other Agreement"). If the total gallons of ethanol
          produced and sold to AREI during any 12 Month Period under this
          Agreement and the Other Agreement exceeds (**) gallons, the commission
          of (**) percent (**) shall be reduced to (**) percent (**) for all
          gallons of ethanol in excess of (**) gallons produced and sold to AREI
          during such 12 Month Period under this Agreement and the Other
          Agreement."

     C.   Payment. For all quantities of ethanol purchased by AREI from VeraSun
          Fort Dodge during a one-week period beginning on Monday and ending on
          the following Sunday, AREI shall pay the estimated Pooled Net Price