Cold salad, commonly known as cold meat or cold dishes in Chinese food. It is a dish made by adding ingredients such as red oil, soy sauce and garlic to the raw materials, and after preliminary processing and blanching. According to the classification of red oil, it can be generally divided into three categories: spicy, spicy and spiced. Cold salad is unique in style and highly technical. Because it is cold when eaten, it is called cold dish. The main raw material of cold dishes is mostly clinker, so it is completely different from hot dishes. Its main characteristics are: fine selection of materials, dry and fragrant taste, crisp and tender, cool but not greasy, bright color, neat and beautiful shape, harmonious and pleasing to the eye.