Sauce refers to richly flavored stock or liquid used to complement a food. The kinds of foundation sauces are: brown, tomato, white, cream, egg, and butter. Sauces can be savory or sweet. Gravies is a kind meat-flavored savory sauces made from roasted meat drippings , while Sweet sauces include whipped cream, sugar syrups, fruit , caramel and custards.