Looking at this Cute Cheese Sticker, we want to tell you more about this yellow food product. It is a dairy product produced in a wide range of flavors, textures, and forms by coagulation of 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 the enzymes of either rennet or bacterial enzymes with similar activity are added to cause the casein to coagulate.