1, essence: essence is a commonly used flavoring agent, and its main components include spices and solvents. Spices are aromatic compounds extracted or chemically synthesized from natural plants, and solvents are used to dilute and extract spices. There are many kinds of flavors, including single flavor, compound flavor and synthetic flavor. Essence is widely used in beverages, cakes, dairy products, meat products and other foods.

2. Condiment: Condiment is another condiment, which is a mixture of various condiments and spices. The specific ingredients are salt, monosodium glutamate, chicken essence, soy sauce, cooking wine, starch and spices. The production of condiments is divided into grinding, rough machining and mixing. Its purpose is to improve the taste and mouthfeel of food. Condiments are widely used in various dishes and convenience foods.

3. Natural spices: In addition to synthetic spices and condiments, natural spices are also an important flavoring agent. Derived from natural plants, including flowers, herbs, resins, etc. Common natural spices are vanilla, clove, star anise, cinnamon, fragrant leaves and so on. The processing technology of natural perfume is relatively simple, and it is extracted and used by steam distillation, soaking and extraction. Natural spices are widely used in various baked goods, condiments and dairy products.