12:11:01:01.05Frozen milk shake defined.
Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
Frozen milk shake is the semifrozen dessert produced from ice milk mix or ice milk shake mix. Frozen milk shake must contain a minimum of 2 percent milk fat but not more than 7 percent milk fat and a minimum of 23 percent total solids.
Source: 13 SDR 202, effective July 5, 1987.