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Shark fin is dried shark fin. Shark's fin, also called wing, has always been regarded as a noble food in China. Shark fin is one of the precious "eight treasures of seafood", which is mainly composed of connective tissues such as dorsal fin, caudal fin and pectoral fin. The so-called shark fin is the filamentous cartilage in shark fin.

People in China have been eating shark fin for a long time. According to the earliest written records, it should be in the Ming Dynasty. At that time, there was a "shark tendon" in the official dishes, which was shark's fin. Shark fin was a tribute in early China. Officials in the coastal areas of the Qing Dynasty presented shark fin as a tribute to the emperor and listed it as imperial food. Later, from the official court to the official officials and people. The folk diet monograph Suiyuan Food List in Qing Dynasty recorded the cooking and eating methods of shark fin at that time.

Classification of shark fin

According to the species of sharks.

1. Sea tiger wings: Sea tiger wings are quite famous shark fins, with thick needles and many skeletal wings. For example, "Tanghai Tiger Wings" are quite famous wings. Most sea tiger wings come from the Pacific region of South America, and the species of sharks that produce sea tiger wings remains to be studied. This shark's ridged wing can be compared with the white ridged wing, and the hooked wing is the famous golden hill double top hook. Usually, the chest wings used by sea tiger wings are also called wing wings.

2. Grouping wings: Grouping wings come from the scales of plowshare sharks, or more precisely, from a biological point of view, sharks and rays are cartilaginous fish, but sharks generally belong to "lateral laver", that is, eyes and gills heal with their sides. There are about 20 species of rays that can be used as wings, which are distributed in the Red Sea, East Africa, Indonesia, the Philippines, Japan, North Korea and other places, and also produced in the South China Sea and the East China Sea of China, especially in the eastern part of the South China Sea and the Xisha Islands, hence the name "rays".

Plough rays have a flat shape, a long snout and a protruding triangle, and their body length can reach 2 meters. 100 kg takes nearly ten years to grow, so the yield is not much. The dry wings made of the dorsal fin, the second dorsal fin and the tail of the plough ray are commonly known as the large group wings in the industry, including the head circumference, the second circumference and the tail hook (or tail circumference), which are combined into one and braised in brown sauce.

3. Nine wings in the sky: Nine wings in the sky come from two huge sharks. According to different sources, Sky Nine Wings can be divided into two types, namely "Cowhide Sky Nine Wings" and "Norwegian Sky Nine Wings". "Cowhide Nine Wings" comes from a shark commonly known as "Cowhide Shark", which is the largest shark species in the world. It is 20 meters long and weighs 5 tons, so its scales are taken.

"Norwegian Sky Nine Wings" originated from basking shark, which is the second largest shark species in the world, and its volume can be as long as 15 meters. Compared with "Cowhide Sky Nine Wings", "Norwegian Sky Nine Wings" is slightly thinner, with light gray skin, long and thick needles, smooth skin and not thick skin and flesh membrane, especially dorsal fin and caudal fin, which is the best one at present.

Whale sharks are huge. In ancient times, people thought they were "divine fish" and called them "Tianjiu". Tianjiu wings are famous for their huge size, and some of them are as long as 1.2 meters. "Tianjiu" is a gambling tool, the biggest in Wen Zi is "Tian" and the biggest in Wuzi is "Jiu". This gambling tool is called Tianjiu. Because this wing is huge, it is named Tianjiu Wing, which actually comes from the huge size of whale sharks and basking sharks.

4. Butterfly green wings: "Butterfly green wings" are mainly imported from the Middle East and Indonesia in Asia, but also from Vietnam and the Philippines, but the best quality is Brazil, Colombia and Mexico in South America. The shark that produces this kind of wing is called lemon shark in English, and the butterfly ridge wing also has pectoral fins, that is, the wing membrane is not thick and the wing needle is very thick, which is enough to replace Tianjiu because it is better than Tianjiu.

5. Hook wing: Hook wing has a wide range of meanings, ranging from "Jinshan double-top hook" (produced by sharks that produce sea tigers) to high-fork hook (produced by sharks that produce purple wings, which are more active in English, called mako), Wuyang hook and even tooth-picking hook (produced in Japan, Southeast Asia and Brazil, with smaller wings). Hook wings are generally thick and beautiful in appearance.

6. Green fin: The meaning of green fin is also very broad, but green fin refers to the pectoral fin of different sharks. In addition to the high-grade sea tiger, butterfly ridge and ridge ridge, they are collectively called green fins. It is difficult to distinguish the variety and origin of green fin one by one. The variety and origin of sharks also determine the quality of green fins. For example, the green fin produced in the southern region is better than that in the South Pacific, and there are also those in the Pacific Ocean. Generally, the pectoral fin above 18 inch is called Ding Qing, and the pectoral fin below 16 inch is called Qing pian, and the wings of Qing pian are generally scattered, such as "ribs soup scattered wings" and "chicken soup wings".

7. Tooth-picking wings: Tooth-picking wings are mainly produced in Japan, Southeast Asia, Brazil and other places. Although the needle for picking teeth wings is not thick, it is better than soft and smooth, and is generally used for spreading wings. For example, "abalone soup with wings" and "braised chicken with silk wings" are mostly picked out with teeth.

According to the growing shark body parts.

Shark fin comes from shark fin, mainly dorsal fin, pectoral fin and caudal fin, which can be made into ridge wing, wing wing and hook wing respectively. Among them, the ridge wings are mostly triangular, and the colors on both sides are similar to those of the hook wings, but the wings are mostly long and the colors on both sides are different, which can be described as "yin and yang colors".

1. Hook wing: It is taken from the tail fin of the hook wing. The whole fin is boneless, so it has the largest number after processing. The wing needle is thick and long, and the price is also the most expensive. It is mostly used for spreading wings.

2. Ridge wing: (also called single wing) It is taken from the dorsal fin of the ridge wing, and the needle of the wing is younger and shorter, which is mostly used for wrapping wings.

3, wing wing: (also known as fin) From the chest ridge, the wing needle is the youngest, the wing body is thinner, the price is lower, and it is mostly used for spreading wings.

According to the form of wet hair

1, wrapped wing (abalone wing is often written in restaurants): also known as row wing, the wing needle is closely connected to the soft periosteum to form a comb-shaped fan.

2, scattered wings (restaurants often sketch wings): super needles are independent.

3. The whole set of wings (head ring, second ring, tail ring) are arranged in a plate, which is not scattered or rotten, and the ribs are arranged neatly and clearly visible.

According to whether it is processed or not.

1. Raw goods: wings are gray-black, which is unprocessed.

2. Cooked goods: also known as dry goods, are made of raw goods after processing, scraping, deboning and drying. It's usually light yellow and cooked food is used in restaurants.

3. Shuipanchao: The washed shark fin has been soaked. Restaurants use this shark fin instead of soaking themselves, which can save manpower, space and fuel, and the weight and profit are easy to calculate.