The yellow substance on the head of crayfish is shrimp yellow in principle, which contains a lot of protein and unsaturated fatty acids. It is edible, has high nutritional value and can supplement sufficient nutrition for human body.

However, the head of crayfish not only has shrimp yellow, but also its liver, pancreas, stomach, gills and other parts are concentrated in the head. On the one hand, it may carry a lot of parasites and pathogens, and on the other hand, it may carry a lot of heavy metals. If it is not cleaned, it may be harmful to human health after eating. Therefore, it is better for ordinary people not to eat the yellow head of crayfish, especially for neat friends who don't know how to deal with crayfish.

2 Which part of crayfish can't be eaten delicious, but not all parts can be eaten. The following parts are not suitable for eating:

The heart, gills, stomach and other main internal organs of crayfish are concentrated in the head of shrimp, which may carry a lot of parasites and heavy metals, so it is not recommended to eat.

When eating crayfish, the shrimp line must remember to remove its digestive glands. Shrimp line is the digestive tract of crayfish, which mainly contains crayfish excrement and undigested food residue. It is recommended to remove the shrimp when handling it.

3 What is the stomachache after eating crayfish? The main reasons are as follows:

Under normal circumstances, eating crayfish will not cause stomach pain. If the stomach hurts after eating crayfish, it may be that the crayfish is not cleaned cleanly, which leads to irritation of the gastrointestinal tract and discomfort such as abdominal pain and diarrhea.

It may also be that you have gastrointestinal diseases, such as acute gastroenteritis. Eating too much crayfish may induce some uncomfortable symptoms.

4 how to clean crayfish? Many people don't know how to clean crayfish, but crayfish is relatively easy to clean, as follows:

1. To clean lobsters, you need to pour a proper amount of salt and white vinegar into clear water first.

2./kloc-After 0/5 minutes, you will see a lot of sediment in the water.

3. Then take out the crayfish and rinse it for two or three times.

4. Then clean the abdomen of crayfish with a fine brush.

5. Then cut off a part of the head with scissors, pull out the black line on the shrimp back, and peel off the shrimp feet and cheeks.

6. Finally, rinse with clean water.