Cheese is a dairy product produced in wide ranges of
flavors, textures, and forms by coagulation of the milk protein
casein. It comprises proteins and fat from milk
(usually the milk of cows, buffalo, goats, or sheep). During production,
milk is usually acidified and either the enzymes of rennet or
bacterial enzymes with similar activity are added to cause the casein to
coagulate.
The solid curds are then separated from the liquid whey and pressed into
finished cheese. Some cheeses have aromatic molds on the rind, the outer
layer, or throughout.