This document provides an overview of pastry knowledge, including definitions of pastry, the major ingredients used, and classifications of different types of pastry products. It outlines the organizational structure of a pastry department and responsibilities of the head pastry chef. Key pastry categories covered include breads, cakes, creams, sauces, and desserts like puddings, custards, and ices. The major ingredients of flour, sugar, fat, eggs, and leaveners and their functions in baking are also summarized.