Iowa was once known as one of the top butter producers in America.

According to “The Annals of Iowa,” the Hawkeye State was second in America in dairy production in 1943. Iowa even reportedly produced one third of all butter made in the United States .

Iowa loves butter so much, the Iowa State Fair features a sculpture of a cow made mostly out of butter.

But did you know there are state laws about butter?

What’s the Iowa state law regarding butter?

According to Iowa state law, it is illegal to sell margarine as butter.

The state law says oleo, oleomargarine, or margarine must be labeled as such and the packaging should include a full and accurate statement of all ingredients it contains.

The state law also says that margarine or similar margarine products may not be advertised o

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