1. Generally, crabs need to be boiled for 15 ~ 20 minutes, and crabs below two specifications can be eaten in about 15 minutes. For crabs of more than two sizes, the cooking time should be reasonably adjusted according to the size, and should not exceed 20 minutes. Don't cook the crab immediately after it is cooked. It's best to stew in the pot for 5 minutes.

2. You need to clean the crabs before cooking, and brush the dirty things on your mouth and stomach with a brush to make them more hygienic to eat. Boiled crabs need to be boiled in cold water to prevent crabs from struggling violently when heated, and also to make crab meat more delicious.

3. Crabs are relatively cold food. It is best to eat rice wine and ginger vinegar juice together, which can reduce their coldness and make crabs more delicious. Pay attention to pregnant women not to eat crabs, so as not to affect the fetus. People with bad stomachs should not eat too many crabs.