Processed cheese Arnold Nawrocki was assigned to Clearfield Cheese Co. in 1956. The best known processed cheese in the United States is marketed as American cheese by Kraft Foods, Borden, and other companies. It is orange, yellow, or off-white; mild, with a medium consistency; and melts easily. It is typically made from a blend of cheeses, most often Colby and cheddar. Another type of processed cheese created in the United States is Provel pasteurized processed pizza cheese, which uses cheddar, Swiss, and provolone cheeses as flavorants. Provel cheese is commonly used in St. Louis-style pizza. A third variety of processed pizza cheeses
Cheddar cheese not protected by the European Union, though the name "West Country Farmhouse Cheddar" has an EU protected designation of origin, and may only be produced in Somerset, Devon, Dorset and Cornwall, using milk sourced from those counties. Cheddar is usually sold as mild, medium, mature, extra mature or vintage. Mature cheddar is the best-selling variety in the UK. Cheddar produced in Orkney is registered as an EU protected geographical indication under the name "Orkney Scottish Island Cheddar". The state of Wisconsin produces the most cheddar cheese in the United States; other centres of production include: California, Idaho, Upstate New York,