Pizza cheese encompasses several varieties and types of cheeses and dairy products that are designed and manufactured for use specifically on pizza, including processed and modified cheese such as mozzarella-like processed cheeses and Mozzarella variants. Pizza cheese can also refer to any type of cheese suitable for use on pizza.[1] Estimates have placed 30% of all pizza cheese used in the United States is mozzarella cheese. The most popular cheeses used in the preparation of pizza are mozzarella, provolone, cheddar and Parmesan. Emmental, Romano and ricotta are often used as toppings, and processed pizza cheeses manufactured specifically for pizza are used often in mass production environments.