Truffle sauce is a creamy sauce that can be used on pasta, pizza, seared meats, and gratins. It is typically made with heavy cream, butter, garlic, shallots, white wine, and grated black truffles. Truffle oil and truffle pate can also be used as substitutes for fresh truffles. The sauce is usually simmered until thickened and then strained before being used. Some recipes call for additional ingredients such as Parmesan cheese, chives, or mushrooms. Truffle sauce can be stored in an airtight container in the refrigerator for a few days.