Crab is a kind of aquatic life, crab is to rely on the water inside the growth of small fish and shrimp for food. Crabs need to be cleaned before steaming, otherwise there will be a lot of mud and dirt inside the crab's body, which will make the crab taste lower. You can use a small brush to scrub the shells and legs of the crabs, and then rinse the crabs with water.
Steaming crabs is a light and flavorful dish, but it is important to clean the crabs before steaming them. Because the crabs have been living in the silt and have a lot of parasites and grit in their bodies, you usually have to connect a pot of water and soak the crabs in it first.