How to cook swimming crabs

1. After buying the crab, you must keep it in the water and let it crawl and swallow until it spits out the dirt in its stomach.

2. Then, use a brush to carefully brush the front and back of the crab. After washing it clean, put it in the pot and cook it.

3. When the crab shell turns red, cook for about ten minutes. When eating, dip it in soy sauce with ginger and rice vinegar.