How to buy blue crab?

High-quality and fatty blue crabs generally weigh about two or three hundred grams, the meat is firm, and the jagged tip of the crab shell is completely opaque. Some of the mated large male crabs and the blue crabs that have just changed their shells have consumed a lot of physical strength, the meat is loose, and it is not full at all, so when buying blue crabs, you should pick up two and weigh them. The optimal temperature for blue crabs to be stored is 8 18 °C, and too high or too low a temperature can lead to rapid death.

When preserving blue crabs, they should be kept in a moist and cool place and soaked in salt water with a concentration of 18% for 5 minutes a day, so that they can live for 3 to 10 days.

How to choose to buy blue crabs? Blue crab purchase skills four, cost-effective crabs.

Whether it tastes good or not actually depends on personal taste. First, the distribution is different.

1. Blue crab: distributed in the Indo-Western Pacific region, including Japan, Ryukyu, Chinese mainland, Taiwan, Southeast Asia, India, East Africa, South Africa, Australia and other places. It mostly inhabits mires with low salinity, such as estuaries, inner bays, and mangroves.

2. Dungeness crab: Dungeness crab lives only in the waters of the northeastern Pacific Ocean from the Aleutian Islands in Alaska to Southern California. The main production areas are in Northern California, Oregon, Washington State, Alaska, British Columbia.

Dungeness crabs caught in Alaskan waters are much larger than those on other coasts, with the average Alaskan Dungeness crab weighing 1 kilogram.

Second, the appearance is different.

1. Blue crab: The dorsal carapace of the blue crab is horizontally oval and the sides are sharp. The nail surface is smooth, the forehead has four teeth of equal size, the anterior lateral margin contains the external teeth of the eye socket with a total of 9 large teeth, and the fourth step foot is flattened and specialized into a paddle-like swimming foot, which is suitable for swimming.

chelicerae smooth, asymmetrical, right foot slightly larger than left; The metacarpal segment is swollen and smooth, with 2 granular ridges on the dorsal surface, each with 1 spinous at the end. The first three pairs of feet are toothless, and the anterior and posterior edges of the knuckles have short brush-like hairs.

2. Dungeness crab: Only male Dungeness crabs can be caught (male crabs have a V-shaped ventral cover, or crab navel, while female crabs have a large and round belly cover). The length of the back cover of Dungeness crab should not be less than 16 cm, which is equivalent to the size of 500 grams. Dungeness crabs can reach a maximum of kilograms.

Third, the types are different.

1. Blue crab: Blue crab is a phylum of arthropods, molluscs, decapods, pike crabs, blue crabs, decapods, and is one of China's precious aquatic products.

2. Dungeness Crab: Dungeness Crab, decapod, named after the small town of Dungeness in Washington. This crab lives only in the waters of the northeastern Pacific Ocean from the Aleutian Islands in Alaska to Southern California. It is large and fleshy, and only male Dungeness crabs can be caught.

The above is the introduction of Dungeness crab and blue crab, relatively speaking, because Dungeness crab crab crab is large and meaty, there is a great market demand, and only lives in the waters of the northeastern Pacific Ocean from the Aleutian Islands in Alaska to Southern California, it is a very valuable treasure, and the grade is relatively high.

Eating seafood in autumn is the time to eat crabs, so friends, do you want to eat crabs? Here's a little bit of the best place to eat blue crab, and then you can choose to buy it.

1.Qinzhou blue crab.

Qinzhou blue crab is a specialty of Qinzhou City, Guangxi Zhuang Autonomous Region. Qinzhou blue crab, scientific name saw-edge blue crab, delicious taste, high nutritional value, is one of the traditional export aquatic products in the region. Qinzhou crabs are exported to Guangdong, Fujian, Hong Kong and Macao.

Qinzhou blue crab is a national agricultural product protected by geographical indications.

2.Sanmen blue crab.

Sanmen crab is a specialty of Sanmen County, Taicha Socks City, Zhejiang Province. With its thin shell, yellow cream, tender meat, delicious taste, pure germplasm resources, and excellent growth environment, Sanmen crab has won many awards such as National Geographical Indication Product, China Organic Product, China Famous Brand, and Gold Medal of China International Agricultural Expo. Its products sell well in domestic and foreign markets.

One city blue crab is a special product of a town in Ninghai County, Ningbo City, Zhejiang Province. Ninghai blue crab, scientific name saw-edge blue crab, because of the superior growth environment, delicate meat, commonly known as slug.

3.Anton blue crab.

Anqing crab is a specialty of Andong Town, Cixi City, Ningbo City, Zhejiang Province. Cixi blue crab has the characteristics of large size, delicious taste and long vitality of dry transportation, so it has strong market competitiveness.

4.Ma Jiadang big blue crab.

Magadan blue crab is a specialty of Magadang, Funing County, Rangyan City, Jiangsu Province. Madang blue crab is a large, fat crab with delicate flesh and delicious taste. It is known for its green shell, white belly, yellow hair, and hook gold, and is nicknamed "yellow hair golden hook crab". It is well-known at home and abroad, and is well-known throughout the country.

Sanmen blue crab is produced in Sanmen County, near Sanmen Bay, Zhejiang. Sanmen County is located on the eastern coast of Zhejiang Province, bordering Tiantai Mountain in the west, Sanmen Bay in the east, Ninghai County in the north and Linhai City in the south, with a total area of 1,510 square kilometers. The unearthed cultural relics prove that as early as the Neolithic Age, the tombs on Jiankeng Mountain and Tingbian Town in Liu Biao Town were inhabited.

The county is named after Sanmen Bay, which is known for its abundant resources and is known as "rich forest mine, rich water and fish salt".

Sanmen Bay is a national key marine aquaculture base. The offshore water quality is fresh, the salinity is moderate, the bait is rich in organisms, and the breeding conditions are unique. The blue crabs produced in Sanmen Bay are famous far and wide, and have won the title of "the hometown of Chinese blue crabs".

Sanmen Bay blue crab is a high-protein and low-fat food that contains 18 kinds of amino acids. In addition to the edible value, it also has extremely high medicinal value.

1.Observe whether the blue crab is fresh.

How can delicious seafood not be fresh! When buying blue crabs, be sure to choose fresh ones, not dead or dying ones. You can turn the blue crab over. If you can turn it over yourself, it means it's still fresh. It's the best.

2.Observe the shell of a blue crab.

Lift the blue crab and look at the jagged top of the crab shell against the light. If it is transparent, it means that the blue crab is not full. Choose opaque, generally the crab meat will be very full.

3.Observe the bottom of the blue crab.

The white or even transparent bottom of the blue crab indicates that it has just changed its shell, so don't buy this, because the blue crab that has just changed its shell often consumes a lot of energy, and there is definitely not much meat.

Crabs are more expensive.

Blue crab is the name of a crab, and cream crab generally refers to the female blue crab, because the paste carried by the female blue crab is very round. For the practice of blue crabs, in fact, everyone still understands some, if you want a light taste, you can immediately steam, so that you can eat the deliciousness of blue crabs, if you want to be fragrant, you can apply the selection of oil explosion.

Blue crab is the name of a crab. Females will appear pastry when the breeding season is approaching, while males will appear yellow. The female crab with the cream is called the cream crab.

Therefore, to sell ointment, you must first recognize the female crab, and the male crab does not have ointment. Male crabs and female crabs are still relatively easy to distinguish, look at the abdomen, the crab navel is slender and pointed is the male crab, also known as the pointed umbilicus; The crab navel is wide and round, and it is a female crab, which is called a lump umbilicus.

Nutrients of blue crab.

1. Enhance immunity.

Blue crab has a variety of protein and nutrients, which has a very good nourishing and health effect on the human body. Saw-edged blue crab.

Each component has a rich variety of proteins, in which the female worm prostate.

The position of the ingredients is reached, ranking among the highest in fresh protein content.

Moreover, the protein amino acids of the saw-edge blue crab are complete, and amino acids are required.

Protein can promote the body's hair, maintain the body's nitrogen balance, and enhance immunity.

2. The nutrient content is very high.

Saw-edged blue crabs contain a variety of inorganic substances.

Element, especially SE and CA, is a seafood product with high nutrient content and health care effects.