Hairy crabs are very delicious food. People will begin to eat hairy crabs near the Mid Autumn Festival in China. Although hairy crabs are delicious, there are many taboos when eating them. Can hairy crabs eat after they die? How to judge whether hairy crabs are fresh?
1. What is hairy crab
Hairy crab is a kind of river crab, which is also known as Chinese mitten crab. From Liaohe River to Zhujiang River in the north of China, the Yangtze River system has the largest output and the most delicious taste. Generally speaking, hairy crab refers to the Chinese mitten crab of the Yangtze River system. Generally speaking, the authentic Yangcheng Lake hairy crabs are characterized by green back, white belly, full claw, yellow hair and strong body.
2. How long does a hairy crab die
Hairy crabs are on the verge of death or as long as they are dead, it's better not to eat them,
Hairy crabs are easy to rot after death. There is a substance called histidine in crabs. When they are dying or dead, histidine in crabs will decompose to produce histamine. Histamine is a toxic substance. With the prolongation of death time, more and more histamine and toxins are accumulated in crab body. This toxin is not easy to destroy. Even if it is cooked, do not eat it.
3. How to judge the death of hairy crabs
1. Pick up the bundled Yangcheng Lake hairy crabs and touch their eyes with their hands to see if they blink, which means they are fresh.
2. Take half a basin of water, put the bound crab into the water, and see whether the mouth of the crab spits bubbles, which means it is fresh. (remember, don't put the bound crab into the water for a long time, because the water is short of oxygen, and the crab will soon suffocate.)
3. Touch the crab claw and straighten the smallest crab claw to see if it bends naturally soon. If it bends naturally, it means it is fresh.
4. Untie the bound crab and see if it crawls. Crawling indicates that the crab is fierce.
5. Why can't dead river crabs eat
Crabs live in the water, like to eat dead fish, dead shrimp and other decayed animal carcasses, in the body of crabs will be infected with certain bacteria. In particular, most of the river crabs grow in dirty ponds, and there are a lot of bacteria inside and outside the crabs. Living crabs can expel bacteria from the body through metabolism; once the crabs die, the bacteria in their bodies will multiply in large numbers, decompose the crab meat, some bacteria also produce toxins, if people eat such crabs, they will cause food poisoning, common manifestations are nausea, vomiting, abdominal pain, diarrhea; severe cases can occur dehydration, electrolyte disorder, convulsion, even shock Coma, septicemia, etc.
6. How to deal with crab poisoning
If there is any discomfort after eating crab poisoning, you must immediately try to spit out the food from the stomach, if necessary, wash the stomach and catharsis, and take anti-bacterial and anti-inflammatory drugs and symptomatic treatment, and send the serious one to the hospital for treatment.
In addition, it can be used by the Folk: 15 grams of garlic, 25 grams of brown sugar added to the dregs of mashed garlic soaked in cold boiled water, once drunk, once every hour, three to four times in a row, with certain effect.
7. Parts that hairy crabs can't eat
1. Crab gill: after opening the crab shell, the two rows of gray fan-shaped soft tissues on the crab are the crab gill. It is the respiratory organ of crab, used to filter the water, very dirty. Do not eat the triangle crab under the gills;
2. Crab intestines: there are excrement of crab in it. After breaking off the body of crab, you can see that there are black things in the crab's yellow and meat. You need to take them off;
3. Crab stomach: a triangle bag hidden in the crab's yolk. Open the crab's shell and see that there is some crab's yolk on the shell. The crab stomach is hidden in the crab's yolk of the shell. There is crab excrement in the crab's stomach, which is very dirty. It is not recommended to eat it.
4. Crab heart: also known as crab hexagonal plate. Open the crab shell, you can see a layer of black membrane, the crab heart is hidden under it, white hexagon, Chinese medicine often said that the crab is extremely cold, and the crab heart is the most, must not eat.