1. Sauces serve to enhance the taste, moisture, and appearance of foods. They add flavor, richness, and succulence.
2. There are several types of common sauces including béchamel, velouté, espagnole, hollandaise, and vinaigrette.
3. Béchamel is a white sauce made with milk and a roux, while velouté is a white sauce made from stock and sometimes enriched with egg yolks or cream.