The "shrimp yellow" in the shrimp head is the favorite of many crayfish lovers. Ordinary people think that the correct way to eat crayfish is to hold the shrimp body with one hand, the shrimp head with the other hand, twist it gently, separate the shrimp head from the shrimp body, then suck the juice from the shrimp head and slowly taste the shrimp yellow. Then peel off the tail shell and eat meat. But in fact, it should not be eaten like this, because the head of crayfish is not as clean as everyone thinks. Shrimp yellow is the gonad of lobster. Together with the liver, it is easily polluted by the toxins treated by crayfish itself, and may also absorb heavy metals in the growing environment.

Crayfish has almost no other organs except one intestine, and all organs are concentrated in the head. These organs include stomach, liver, heart, a pair of testicles or ovaries, antenna glands of excretory organs, bladder and excretory pores. In short, eating shrimp head is equivalent to eating shrimp dung, eating semi-digested shrimp and drinking shrimp urine.

Secondly, consider the growth environment of crayfish. If the growth environment of crayfish is not good, the shrimp head in rich environment will be polluted by heavy metals, and it will also be polluted by parasites in water environment. Become the host of parasites such as schistosomiasis and Clonorchis sinensis. In a word, shrimp head is the place where toxins are absorbed and accumulated the most, and it is also the place where pathogens and parasites are most likely to accumulate.

In short, no one should eat crayfish. If you are going to cook crayfish at home, you must cook it at high temperature to kill parasites. You can judge whether the shrimp is cooked by observing whether the color of the cross section of the shrimp is consistent.

Before cooking, please be sure to feed crayfish with clear water for about 24 hours, so that crayfish can spit out metabolites. In addition, crayfish should be washed with a brush to remove internal organs, and then thoroughly washed with clear water for 2-3 times.