This document provides information on preparing stocks, soups, and sauces. It defines stocks and broth, explaining that stock is a thin flavored liquid produced by simmering raw ingredients while broth contains solid pieces of meat or fish. It then discusses the key parts of preparing stock, including mirepoix, aromatics, liquid, and major flavoring ingredients. Various types of stocks are also outlined such as white stock, brown stock, fish stock, and vegetable stock. Basic rules for preparing stock are listed, such as simmering gently and skimming the surface.