Document:

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                                                                     Exhibit 4.1

    CERTIFICATE NO. ______                                           ______UNITS

                            CERTIFICATE OF OWNERSHIP
                            HUSKER AG PROCESSING, LLC
                           A LIMITED LIABILITY COMPANY

         THIS DOCUMENT CERTIFIES THAT: _________________________________, has
made a capital contribution in HUSKER AG PROCESSING, LLC, a Nebraska limited
liability company, as reflected on the company's books and records and is vested
with an ownership interest in the company consisting of five (5) Units (as
defined in the company operating agreement). The stated capital contribution and
proportionate ownership interest is subject to change and is reflected in the
books and records of the company which are prepared and kept in accordance with
the articles of organization and operating agreement as may be in force from
time to time.

         RESTRICTIONS:

         The sale, pledge, hypothecation, assignment or transfer of the
ownership interest represented by this CERTIFICATE OF OWNERSHIP is subject to
the terms and conditions of the Operating Agreement of Husker Ag Processing, LLC
as amended from time to time. Copies of the Operating Agreement may be obtained
upon written request to the Board of Directors of Husker Ag Processing, LLC.

         IN WITNESS WHEREFORE, the duly authorized officers of this company have
hereunto subscribed their names to this CERTIFICATE OF OWNERSHIP this ___ day of
, 20__.

     -----------------------------------           -----------------------------
     Gary Kuester, Chairman of the Board           Jack G. Frahm, Secretary

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FOR VALUE RECEIVED ________________HEREBY SELL, ASSIGN AND TRANSFER UNTO

______________________________________ MEMBERSHIP UNITS REPRESENTED BY THE
WITHIN CERTIFICATE, AND DO HEREBY IRREVOCABLY CONSTITUTE AND APPOINT___________
ATTORNEY TO TRANSFER SAID MEMBERSHIP UNITS ON THE BOOKS OF THE WITHIN NAMED
LIMITED LIABILITY COMPANY WITH FULL POWER OF SUBSTITUTION IN THE PREMISES.

DATED: ______________, 20_____  ______________________________________________
                                        (MEMBER SIGNATURE)

                                             _________________________________
                                                    (MEMBER SIGNATURE)

                                             NOTICE: THE SIGNATURE TO THIS
                                             ASSIGNMENT MUST CORRESPOND WITH
                                             THE NAME AS WRITTEN UPON THE FACE
                                             OF THIS CERTIFICATE IN EVERY
                                             PARTICULAR, WITHOUT ALTERATION OR
                                             ENLARGEMENT OR ANY CHANGE WHATEVER.

IN PRESENCE OF:

DATED: ______________, 20_____      ____________________________________
                                         (WITNESS SIGNATURE)<PAGE>

                                                                     Exhibit 4.3

                                ESCROW AGREEMENT

         This Escrow Agreement is made this 7th day of May, 2001, by and between
Husker Ag Processing LLC, a Nebraska limited liability company ("Husker Ag"),
and Midwest Bank N.A. d/b/a Plainview National Bank, a Nebraska chartered
banking corporation, with an office located in Plainview, Nebraska ("Escrow
Agent").

                                R E C I T A L S :

         WHEREAS, Husker Ag was formed for the purpose of constructing and
operating an ethanol plant near Plainview, in Pierce County, Nebraska;

         WHEREAS, Husker Ag is, or will be, conducting a public offering of its
membership units and pursuant to the terms and conditions of its prospectus,
Husker Ag has committed to escrow the proceeds of the membership units sold to
investors;

         WHEREAS, Husker Ag wishes to establish an escrow account to hold the
proceeds of subscriptions for the membership units for a minimum of 10,000
membership units and a maximum of 12,000 membership units, until written
instructions from Husker Ag have been received;

         WHEREAS, Midwest Bank N.A. d/b/a Plainview National Bank is willing to
hold the escrow account and serve as Escrow Agent, in accordance with the terms
and conditions provided in this Escrow Agreement.

         NOW, THEREFORE, the parties agree as follows:

         1. ESTABLISHMENT OF ESCROW ACCOUNT. Husker Ag shall open and maintain
an escrow account with Escrow Agent which shall be an interest bearing account,
and shall earn interest at the rate offered from time to time by Escrow Agent
(the "Escrow Account").

         2. ESCROW ACCOUNT AUTHORIZATIONS. Only officers of the Escrow Agent
shall be entitled to withdraw funds from the Escrow Account as provided herein.
Husker Ag shall deliver to Escrow Agent for deposit in the Escrow Account all
funds, checks, bank money orders, etc., received by Husker Ag from the sale of
membership units. All checks, bank money orders, etc. shall be made payable to
"Midwest Bank N.A. as Escrow Agent for Husker Ag Processing, LLC". Husker Ag
shall deliver to Escrow Agent with each investor's funds, the investor's name,
address, amount of investment and date of deposit. Escrow Agent shall maintain
this information in its records for the purpose of returning to each investor
the investor's funds in the event that the minimum equity offering of $10
million is not subscribed by December 1, 2001, as provided in Paragraph 4 of
this Agreement. All proceeds so deposited shall remain the property of the
subscriber and shall not be subject to any liens or charges by the Escrow Agent
or judgments or creditors' claims against Husker Ag unless and until released to
Husker Ag as hereinafter provided. The pro rata amount of interest to be
allocated to each subscriber in the event the funds are returned to the
subscribers will be based on the date of the deposit of the respective
subscriber's funds into the Escrow Account by Husker Ag.

         3. INVESTMENT OF DEPOSITED FUNDS. The Escrow Agent shall invest all
funds received and deposited in the Escrow Account in United States government
or government agency securities, or certificates of deposit issued by banks with
a net worth of at least $10,000,000. Any investment of deposited funds must be
made in recognition that offering proceeds must be able to be transmitted
promptly to Husker Ag or the investors if the stated

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conditions are met. The following securities are not permissible as investments:
(1) money market funds; (2) corporate equity or debt securities; (3) repurchase
agreements; (4) bankers acceptances; (5) commercial paper; and (6) municipal
securities.

         4. WITHDRAWALS FROM ESCROW ACCOUNT. Husker Ag shall not withdraw funds
from the Escrow Account for use by Husker Ag prior to the time that the
following conditions are met (the "Release Conditions"): (a) Husker Ag closes
the offering and has obtained signed Subscription Agreements for sales of
membership units totaling at least $10,000,000; (b) Husker Ag has obtained a
commitment letter for financing construction of the ethanol plant; and (c) there
shall not be any legal orders prohibiting the offering or release of funds from
escrow, or orders from the United States Securities and Exchange Commission
revoking the effectiveness of the Registration Statement related to the
offering.

         5. TERMINATION OF ESCROW ACCOUNT. At such time as Husker Ag has met the
Release Conditions, which shall be completed by December 1, 2001, Husker Ag's
Board of Directors shall adopt a resolution instructing the Escrow Agent to
terminate the Escrow Account and transfer all funds, including interest, to
other accounts maintained by Husker Ag. In the event that Husker Ag has not met
the Release Conditions by December 1, 2001, then Husker Ag shall instruct the
Escrow Agent to return to the investors all funds from the sale of membership
units held in the Escrow Account with interest. Husker Ag may, in its sole
discretion, abandon the sale of the membership units at any time prior to the
termination of the offering period. Upon the receipt of written instructions
from the Chairman of the Board or President of the Company that the offering is
being abandoned, the Escrow Agent shall refund the monies on deposit to the
subscribers thereof as provided in this Paragraph 5.

         6. ESCROW AGENT'S RELIANCE. Escrow Agent shall be under no duty or
responsibility to make any inquiry or investigation as to the accuracy,
adequacy, and shall be entitled to assume conclusively, correctness and
completeness of any and all information given in any affidavit, statement, or
other paper received by Escrow Agent under this Escrow Agreement, including, but
not limited to the prospectus. Escrow Agent shall be entitled to rely upon any
notice, request, affidavit, approval, statement, consent or other paper believed
by Escrow Agent to be genuine and to have been signed by the proper party or
parties.

         7. HOLD HARMLESS. Escrow Agent shall not be liable to Husker Ag and/or
any investor for any error of judgment, or for any act done or step taken or
omitted by it in good faith, or for any mistake of fact or law, or for anything
which it may do or refrain from doing in connection herewith, excepting only its
own intentional and deliberate misconduct.

         8. INDEMNIFICATION. Husker Ag agrees to defend, indemnify and hold
Escrow Agent harmless from and against any and all claims, actions, judgments,
losses, liabilities, obligations, damages, charges, costs, and expenses of any
nature whatsoever, including, without limitation, reasonable attorneys' fees and
expenses incurred by Escrow Agent (including such fees and expenses incurred in
any litigation by or against any of the parties to this Escrow Agreement under
this Paragraph 8, arising directly or indirectly from, out of or incident to
this Escrow Agreement, excepting only those accruing as a result of Escrow
Agent's own intentional and deliberate misconduct.

         9. ESCROW AGENT'S FEES.  Escrow Agent shall be entitled to charge
Husker Ag a fee for providing services hereunder in accordance with the terms of
Exhibit A attached hereto and incorporated herein by reference.

        10. TIME. Time is of the essence of this Agreement.

                                       2
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        11. APPLICABLE LAW. The interpretation and enforcement of this Agreement
shall be governed by the laws of the State of Nebraska.

        12. BINDING EFFECT. This Agreement shall be binding upon the parties and
their respective successors and assigns.

         IN WITNESS WHEREOF, the parties have hereunto signed this Agreement.

HUSKER AG PROCESSING LLC,               MIDWEST BANK, N.A. d/b/a PLAINVIEW
a Nebraska limited liability company    NATIONAL BANK, a Nebraska chartered
                                        banking corporation

By: /s/  Gary Kuester                   By: /s/  Roger Synovec
    --------------------------------       -------------------------------------

    Its: Chairman of the Board             Its:  President
        ----------------------------           ---------------------------------

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                                    EXHIBIT A

                                  FEE AGREEMENT

         Regardless of whether the Release Conditions are met by December 1,
2001, the Escrow Agent shall be paid a fee of $500 plus the aggregate of the
Daily Escrow Charges (as defined below) for each day funds are held in the
Escrow Account. The "Daily Escrow Charge" shall equal the balance of the funds
held in the Escrow Account on each day multiplied by .005 and then divided by
365.

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