Steamed crabs are cooked after 15 minutes, 17 minutes and 20 minutes. Generally, every time a crab gains one or two pounds, the time will increase by about two minutes. Raw crabs have certain toxicity and parasites, so it is not easy to kill and destroy the toxicity and parasites if the time is not enough. But if the time is too long, the crabs will lose the delicacy of crabs, and the meat and shells will not be easily separated, making it inconvenient to eat.

Autumn is the best time for people to taste crabs. Crab is a precious aquatic product with tender meat and delicious taste. Crabs are also very nutritious. The content of protein is several times higher than that of pork and fish, and the content of calcium, phosphorus and vitamin A is also very high. Autumn crabs are delicious and nutritious, but if eaten improperly, they may cause harm to health.