Minn. Stat. § 31.77

No city or other lawful authority may require sanitary requirements for bakeries, appurtenances, distribution vehicles, and bakery products, or standards of identity or labeling requirements for bakery products, which are not consistent with laws of this state administered by the state Department of Agriculture or rules promulgated by the commissioner of agriculture. Within 90 days after May 18, 1967, the commissioner shall promulgate rules relating to sanitary requirements for bakeries, appurtenances, distribution vehicles, bakery products, standards of identity and labeling requirements for bakery products which are at least equal to and no lower than those fixed by the Food and Drug Administration of the United States Department of Health, Education, and Welfare.