California Code, Food and Agricultural Code (Formerly Agricultural Code) - FAC § 39907

(a) The term “dairy beverage” or “a dairy beverage” may appear on the principal display panel of the product only when milk and the components or derivatives of milk comprise at least 30 percent of the product on a dry matter basis, or at least 4 percent on a total weight basis.

(b) When the term “dairy beverage” or “a dairy beverage” appears on the principal display panel, it shall be in letters not exceeding the height of the largest letters on the principal display panel.

(c) Notwithstanding subdivision (a), when the term “dairy beverage” or “a dairy beverage” appears on the information panel of the label of the product, it shall be clearly and conspicuously labeled in bold type and of a type size equal to that used in the ingredient list.