U.S. food law requires ice cream to contain at least 10% milk fat.
That standard distinguishes ice cream from several related frozen desserts. Products with lower fat may be sold as frozen dairy dessert, while sherbet and sorbet follow different compositional rules. The federal definition also addresses milk solids, sweeteners, and the amount of air incorporated during freezing.
The 10% figure is a minimum, not a target shared by every recipe. Premium ice creams often contain more milk fat, producing a richer texture, while gelato generally uses less cream and is served at a warmer temperature. Country-by-country definitions vary, so the legal meaning of “ice cream” is not identical worldwide.
Milk fat contributes flavor, body, and a smooth mouthfeel. It also helps reduce the perception of ice crystals. That is why ingredient lists and nutrition panels can reveal meaningful differences between products that all look like ordinary ice cream.