Mise en place refers to having all ingredients and tools prepared ahead of time before cooking. The document discusses the preparation of appetizers, including canapés which consist of a base, spread, and garnish on small pieces of bread or pastry. Examples of appetizers mentioned are hors d'oeuvres, relishes, petite salads, chips and dips, soups, cocktails. Canapés and relishes are described in more detail. Good mise en place and presentation are important for appetizers.