Cheeses

Cheese -- a solid food prepared from the pressed curd of milk. There are hundreds of types of cheese. Rennet is often used to induce coagulation in the milk, although some cheeses are curdled with acids like vinegar or lemon juice or with extracts of various species of Cynara (sometimes called vegetable rennet). Rennet is an enzyme traditionally obtained from the stomach lining of bovine calves or a microbiological (laboratory-produced) substitute is used. Bacteria are added to cheese to reduce the pH, alter texture, and develop flavor, and some cheeses also have molds, either on the outer skin or throughout.