Food and Agricultural Code § 38875

Fruit kefir is kefir, reduced-fat kefir, lowfat or light (lite) kefir, or nonfat, skim, or fat-free kefir that contains not less than 8 percent by weight of clean, mature, sound fruit or its equivalent in other forms. The milk fat content of fruit kefir shall be not less than 2.8 percent. Lowfat or light (lite) fruit kefir shall contain not more than 1.2 percent milk fat. Reduced-fat kefir shall contain not more than 2 percent of milk fat. Nonfat, skim, or fat-free fruit kefir shall contain a maximum of twenty hundredths of 1 percent milk fat. Harmless coloring may be added to fruit kefir.

The milk fat content of fruit kefir made from goat milk shall not be less than 2.0 percent.