Parmesan cheese is a hard, dry cheese variety made from skimmed or partially skimmed cow's milk. It has a complex flavor that is often described as both nutty and fruity, and an extremely granular texture that is the product of aging.
Traditional parmesan cheese is made with only salt and rennet, along with milk from cows that have been fed a strict diet. After the milk is coagulated with calf rennet and fermented whey, the mixture is heated to create cheesy granules which are eventually wrapped in cloth and immersed in saltwater to brine for 20 to 25 days. Following the brine bath, the cheese is aged for 12 months or longer on wooden shelves in an aging room, where the cheese is periodically turned.