Blanching crayfish can remove the fishy smell of crayfish. There are many bacteria and parasites in crayfish, which cannot be removed by cleaning. Therefore, after blanching, most bacteria and parasites can be killed.

The types and contents of nutrients in lobsters are not less than those in livestock and poultry meat, but the nutrients in various shrimps are almost the same. All kinds of shrimps are high in protein and low in fat. The content of protein accounts for about 16% ~ 20% of the total, and the fat content is less than 0.2%. The fat contained is mainly composed of unsaturated fatty acids.