California Code, Food and Agricultural Code (Formerly Agricultural Code) - FAC § 36805

(a) Ice cream, frozen dairy dessert, frozen dessert, sherbet, or quiescently frozen confections when sold in package form shall be labeled with the name, address, and ZIP Code of the manufacturer, the wholesale distributor, or the retailer.

(b) If the name and address is not that of the original milk products processing plant, there shall be stamped, printed, or embossed upon the package, in a manner acceptable to the director, the plant number of the manufacturer or packer.This plant identification shall be consistent with, and not more restrictive than, the National Uniform Coding System for packaging identification of milk and milk products processing plants.