## Facts

- Blossom Farm Products Co. sold and distributed a dairy additive, Isokappacase, to Kasson Cheese Co., a mozzarella and provolone manufacturer, from 1981 to February 1984.
- Isokappacase was labeled as a “starter media” and bacteriophage preventive, but it contained over 75% caseins/protein, making it primarily a yield-enhancing agent.
- Under federal and Wisconsin food-labeling rules, using such a yield enhancer in cheese required the resulting product to be labeled imitation cheese rather than “real cheese.”
- Kasson added Isokappacase directly to cheese milk to increase yield but marketed the resulting product as real cheese without imitation labeling.
- Kasson purchased quantities greatly exceeding amounts consistent with ordinary starter-media use, supporting an inference that the product was being used for yield enhancement.
- Evidence supported that Blossom knew Kasson’s production volume and the implications of Kasson’s unusually large purchases, and understood the economic incentive to mislabel.
- The arrangement benefited both parties until state regulators warned Kasson about misbranding; Kasson then stopped using Isokappacase and did not pay for the last shipment.
- Blossom sued on an open account for $138,306; the circuit court dismissed, finding the contract illegal and unenforceable because both parties knew of and benefited from Kasson’s illegal use.

## Issues

1. Whether the evidence supported the trial court’s findings that Blossom knew Kasson was using Isokappacase to illegally misbrand cheese.
2. Whether the open-account sales contract was unenforceable on public-policy grounds because Blossom’s performance knowingly furthered Kasson’s regulatory violations.

## Decision

- The Wisconsin Court of Appeals affirmed the dismissal of Blossom’s claim.
- The court held that enforcing the contract would violate public policy because Blossom knowingly facilitated and profited from Kasson’s illegal misbranding.
- The court accepted that the sale of Isokappacase was not itself a statutory offense, but concluded the agreement was still unenforceable because Blossom’s performance furthered Kasson’s improper use.
- The court upheld the trial court’s fact findings as supported by the record, including inferences drawn from Isokappacase’s composition, Kasson’s purchase volume, and Blossom’s awareness of Kasson’s operations and labeling obligations.

## Legal Principles

- Courts may refuse to enforce a contract on public-policy grounds when the promisee knowingly acts to further the promisor’s improper or unlawful use connected to the transaction.
- A facially lawful sales agreement may be unenforceable when the seller knows the buyer will use the goods to violate regulatory standards and the seller’s performance materially supports that violation.
- When both parties knowingly benefit from conduct prohibited by law (such as food misbranding), a court may deny recovery rather than assist either party through contract enforcement.

## Conclusion

Because Blossom knowingly supplied Isokappacase in quantities indicating yield-enhancing use and thereby furthered Kasson’s illegal misbranding of cheese, the court refused to enforce the open-account contract and affirmed dismissal of Blossom’s collection action on public-policy grounds.


Blossom Farm Prods. Co. v. Kasson Cheese Co., 133 Wis. 2d 386, 395 N.W.2d 619 (Wis. Ct. App. 1986)