The department may establish grade "A" standards for cottage cheese dry curd, cottage cheese, and low fat cottage cheese as a part of the ordinance required by this chapter. However, a governmental body, including the department, a county as provided in chapter 331, or a city as provided in chapter 364 shall not require a grade "A" rating for these products as a condition precedent to their sale.
Iowa Code § 192.141
88 Acts, ch 1152, §3; 90 Acts, ch 1168, §32; 91 Acts, ch 74, §15, 16, 25