The yellow on the head of crayfish is shrimp yellow. Shrimp yellow is the yellow paste on the head of shrimp, which is the ovary of shrimp. As delicious as crab roe, you can eat it. Shrimp liver is the detoxification organ of shrimp, so it is difficult to separate shrimp yellow from shrimp liver. Therefore, try to eat less or not to eat shrimp yellow, and you can't harm your health in pursuit of umami.

Nutritional components of crayfish:

1. According to the composition of protein, the protein content of lobster is 18.9%, which is higher than that of most freshwater and seawater fishes and shrimps. Its amino acid composition is superior to that of meat, and it contains eight essential amino acids that are necessary for human body but cannot be synthesized or insufficient in vivo.

2. The fat content of lobster is only 0.2%, which is not only far lower than that of livestock and poultry, but also far lower than that of green shrimp and prawn. Moreover, its fat is mostly composed of unsaturated fatty acids necessary for human body, which is easily digested and absorbed by human body and has the function of preventing cholesterol from accumulating in the body.

3. Lobster, like other aquatic products, contains essential mineral components, among which calcium, sodium, potassium, magnesium and phosphorus are more abundant, and iron, sulfur and copper are more important.