The fat in cow's milk is called ____.

The fat found in cow's milk is referred to as butterfat. Butterfat is a key component of milk that contributes to its creamy texture and flavor, and it is what is utilized in the production of various dairy products such as butter and cheese. The fat content in milk not only adds richness but also plays a vital role in the overall nutritional profile of dairy products, providing energy and aiding in the absorption of fat-soluble vitamins.

Casein, while significant, is the primary protein found in milk and plays a different role than that of fat. Lactose is the sugar that is present in milk, important for its sweetness and as an energy source, but it is not a fat. Cream refers to the layer of fat that rises to the top of milk when it is left to stand; it is composed largely of butterfat but is distinct from the term used to describe the fat content itself.