2, because if you cook with cold water from the beginning, you will lose the flavor and nutrition of crabs in the cooking process. After cold water is boiled, add crabs and cook for 15 to 20 minutes, then you can eat delicious crabs.

3. It is rich in protein, amino acids, calcium, iron, zinc, potassium, vitamin A, vitamin B, vitamin E and so on. Its efficacy is to promote the body to excrete toxins, protect mucosal epithelial tissue, soften blood vessels, resist aging and improve immunity.