Ill. Admin. Code tit. 77, § 785.910
Processed fluid milk products including mix, except sterilized mix in hermetically sealed containers, shall be cooled promptly after heat treatment or pasteurization to 45º F. or lower and maintained thereat until used. This does not preclude holding fluid milk products at higher temperatures for a short period of time immediately prior to freezing.
(Source: Adopted at 11 Ill. Reg. 2356, effective February 1, 1987)