1, the head of crayfish can't be eaten. From a health point of view, it is not recommended to eat the head of shrimp. The circulatory system, respiratory system and reproductive system of shrimp are concentrated in the head and chest, and the abdomen can be said to be just a motor organ. The head of crayfish absorbs and processes the most toxins, and it is also the part that easily accumulates pathogens and parasites. Never eat the shrimp head of crayfish, let alone eat it raw, which may cause allergies and acute gastroenteritis, and seriously lead to paragonimiasis.
2, crayfish shrimp line can not be eaten.
3, crayfish intestines and other digestive systems are often easy to gather heavy metals, and the shrimp line should be pulled out before cooking. Shrimp line is the digestive tract of shrimp, on the back of shrimp. Some are very dark, some are very light, and they are almost invisible, which is related to the dirty things in them.
How to remove the shrimp line:
1), use a toothpick to insert the second section of the shrimp back, and directly pick out the shrimp line after cutting.
2), cut off the head and tail, and squeeze out the shrimp line and dirty things by hand.
3) When picking the shrimp head, don't twist it off, slowly turn the shrimp head, and the shrimp intestines will be pulled out.
4) Remove the head and shell of the shrimp, leave the tail of the shrimp, cut both sides along the back of the shrimp, and push the back of the shrimp apart by hand. Do you see the shrimp intestines? Just take them out by hand.
4. The shrimp yellow of crayfish is not suitable for eating.
When you are not sure whether the shrimp is clean or not, you should eat less shrimp yellow, and it is best not to eat it. Shrimp yellow is the gonad of lobster, which is close to the liver and is easily polluted. From the test, shrimp meat is very safe, generally there is no heavy metal pollution, but some samples, shrimp brain heavy metals will be a little excessive. Shrimp yellow is located in the head and is easily polluted.
5, crayfish shrimp gills can not be eaten
Shrimp head mainly concentrates on the stomach, liver, heart and other internal organs of shrimp, and the most "dirty" place is actually located in the gill of shrimp. Shrimp is mainly filtered by gills, so harmful substances are concentrated in gills and body surface. It is best not to eat the parts above gills when eating.