Summarize that "abalone, wings, belly and ginseng" are the four sea flavors in China, and only the rich can eat them in ordinary days; Or only on holidays will you show your face in banquet dishes. Edit this paragraph: Bao Bao is abalone, the first of the "four seas flavors" and one of the "eight treasures"; Abalone, which has nothing to do with fish, has something to do with snails and the like. Its shape is somewhat like a human ear, so it is also called "sea ear". The spiral part only leaves traces, accounting for a small part of the whole shell. There are nine abalone holes on the edge of the shell, from which seawater flows in and out, and even the breathing, excretion and fertility of abalone depend. So it is also called "nine-hole snail". The shell surface is rough with dark brown patches, and the inner surface presents blue, green, red and blue pearl luster. Abalone, known as the "crown of seafood", has been one of the "eight treasures" of seafood since ancient times, and is the first of the four major seafood: abalone, ginseng, wings and belly. The grade of abalone is calculated by the number of heads. Each Sima Jin (commonly known as Hong Kong scale, about 655g) has "2 heads", "3 heads", "5 heads", 10 heads "and" 20 heads ",and the fewer the heads, the more expensive they are. The so-called "money is hard to buy two abalones". At present, the number of abalone collected by net is the least, followed by Jipin abalone, and hemp is the smallest and the largest. At present, Ertou hemp and Jipin have become rare varieties, like antique treasures. Edit this paragraph. Wings are shark fins. Fins can be divided into dorsal fin, pectoral fin, gluteal fin and caudal fin according to their growth sites. Made of dorsal fin is called ridged wing, dorsal wing or split wing, which has more wings and less meat and the best quality; Made of pectoral fin, called wing wing or upper green wing, with less meat and poor quality; Tail fin, fin hook tip or tail hook made of tail fin; It's called purse-string wing, and its root is made of gluteal fin. Shark fin is divided into six colors: yellow, white, gray, blue, black and mixed (yellow-white), of which yellow, white and gray are the best. Due to different producing areas and baking methods, there are fresh water wings and salt water wings. Fresh water wings are dried in the sun or soaked in lime water, and the quality is good; Salt water wings are impregnated with salt water, and the quality is not as good as that of fresh water wings. Shark fin can also be classified according to whether its shape is complete or not. When it swells up, it becomes a whole wing, called a row wing, which is the top grade; After rising, it spreads out into strips, which is called scattered wings and has defects. Shark fin is mainly produced in Guangdong, Fujian, Taiwan Province, Zhejiang, Shandong and other coastal provinces and South China Sea islands. Shark fin cooking is soft and smooth, soft and waxy and refreshing. Shark fin is a precious cooking material, but its nutritional value is not very high, because protein contained in shark fin lacks an essential amino acid (tryptophan), which is an incomplete protein. Shark fin contains lipid-lowering, anti-arteriosclerosis and anticoagulant components, which can prevent and treat cardiovascular diseases; Shark fin is rich in collagen, but its protein is incomplete. Cook with meat, chicken, duck, shrimp, etc. , thus supplementing protein, increasing flavor and freshness, nourishing and softening skin. Edit this belly (fish belly), that is, the swim bladder, which is the ups and downs organ of fish and is made by cutting and drying. Generally, there are shark bellies and giant fish bellies. It belongs to one of the four major seafood, and the belly is listed as one of the modern "eight treasures". 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. According to this paragraph, sea cucumbers are echinoderms, which are found in the deep sea. There are more than 60 species along the coast of China, of which more than 20 species are edible. Ginseng and sea cucumber are black in color, tender, soft and elastic, and can be divided into "sea cucumber", "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. [ 1]