Idaho Code § 71-237: Butter, oleomargarine, margarine, butter-like and margarine-like spreads.

Butter, oleomargarine, margarine, butter-like and margarine-like spreads shall be offered and exposed for sale and sold by weight. Butter-like and margarine-like spreads are those products that meet the federal standard of identity for butter or margarine and oleomargarine except that they contain less than eighty percent (80%) fat and may contain other safe and suitable ingredients.