An aged Italian cheese made from sheep's milk that has a hard yellow to dark brown rind and a yellowish white interior. Cheeses that are made with sheep's milk are always referred to as a Pecorino cheese. Aged Pecorino has a salty, tangier and somewhat more fruity flavor than fresh pecorino. As it ages the flavor intensifies. It is a cheese that can be a good substitute to Parmesan although sharper in flavor, and is considered as a good grating cheese for use in sauces, salads or on pasta.