Because its manufacturing process differs from traditional cheeses,[8] federal laws mandate that it be labeled as "process American cheese" if made from combining more than one cheese[2] or "process American cheese food" if it contains at least 51% cheese but other specific dairy ingredients such as cream, milk, skim milk, buttermilk, cheese whey, or albumin from cheese whey are added.[10] Products that have other added ingredients, such as Kraft Singles that contain milk protein concentrate, use legally unregulated terms such as "pasteurized prepared cheese product".[11]