Mo. Rev. Stat. § 196.710: Emulsified cream and filled milk prohibited.

It shall be unlawful to use the article known as emulsified cream in milk, or in any milk product, or any purpose whatsoever. It is hereby declared that filled milk, and emulsified cream as herein defined, are adulterated articles of food injurious to the public health and its sale constitutes a fraud upon the public. It shall be unlawful for any person, firm or corporation to manufacture or ship or deliver to any person within this state any filled milk or emulsified cream.