This document discusses various types of sauces used in cooking. It explains that sauces are flavored liquids that are often thickened and can complement, enhance and finish dishes. Different thickening agents are used depending on the base ingredient. Modern sauces tend to use less fat. Proper sauce making requires consideration of flavor, consistency and not overpowering the main dish. Key sauce making techniques include deglazing pans, skimming surfaces, straining, reducing liquids, and whisking to blend and emulsify ingredients.