21 CFR §135.160

1. (a)Description. Water ices are the foods each of which is prepared from the same ingredients and in the same manner prescribed in § 135.140 for sherbets, except that the mix need not be pasteurized, and complies with all the provisions of § 135.140 (including the requirements for label statement of ingredients), except that no milk or milk-derived ingredient and no egg ingredient, other than egg white, is used.
2. (b)Nomenclature. The name of the food is “______ ice”, the blank being filled in, in the same manner as specified in § 135.140(f)(1) (i) and (ii), as appropriate.