Belly (belly of fish), that is, swim bladder, is the ups and downs organ of fish, which is made by cutting swim bladder. Generally, there are shark bellies and giant fish bellies. , one of the four major seafood, is listed as one of the "eight treasures" in modern times. Produced in the coastal areas of China, Guangdong's "wide belly" is the best. Fujian's "hairy fish belly" is not as good as "wide belly", but it is also a good product. The quality identification of fish maw is relatively simple. In addition to mastering the characteristics of various fish bellies, generally speaking, the ones with thick slices and bright colors are the top grades. Zhang Xiao is thin and dark in color, which is a defective product; The dark ones have gone bad and are inedible. Fish maw is rich in nutrition. The dried product contains 84.4% protein and 0.2% fat.

That is, sea cucumber and sea cucumber are echinoderms, which are produced in the deep sea. There are more than 60 species along the coast of China, of which more than 20 species are edible. Sea cucumber is black, tender, soft and elastic, and can be divided into "Stichopus japonicus", "naked ginseng" and "naked ginseng". Sea cucumber is a kind of food with high protein, low fat and low cholesterol, so it is traditionally considered as a nourishing food, and it is better for people with hypertension, coronary heart disease, hepatitis and the elderly to eat sea cucumber.

Sea cucumber is rich in nutrients, including protein 86.43%, carbohydrate 4.8%, fat 0.27%, ash 4.45%, calcium 0. 1 18%, phosphorus 0.34% and iron 0.00 14%. In addition, it is rich in various vitamins, so it can tonify kidney and blood.