Types of cheese cheeses—grating cheeses such as Grana Padano, Parmesan or Pecorino—are quite firmly packed into large forms and aged for months or years. Some cheeses are categorized by the source of the milk used to produce them or by the added fat content of the milk from which they are produced. While most of the world's commercially available cheese is made from cow's milk, many parts of the world also produce cheese from goats and sheep. Examples include Roquefort (produced in France) and Pecorino (produced in Italy) from ewe's milk. One farm in Sweden also produces cheese from moose's milk. Sometimes cheeses
American cheese American cheese was often simply called "yellow cheese". Today’s American cheese is, by law, required to be manufactured from at least two types of cheese. Because its manufacturing process differs from "unprocessed" traditional cheeses, American cheese cannot be legally sold under the name (authentic) "cheese" in the US. Instead, federal laws mandate that it be labeled as "processed cheese" if simply made from combining more than one cheese, or "cheese food" if dairy ingredients such as cream, milk, skim milk, buttermilk, cheese whey, or albumin from cheese whey are added. As a result, sometimes even the "word" "cheese" is absent