1. Wash the hairy crabs with a toothbrush, drain the water, and wrap them in tin foil as tightly as possible.

2. Wash the pot, heat it and add sea salt. Use a spatula to stir-fry repeatedly. When the sea salt is very hot and dry, stir the salt to the side, put the wrapped hairy crabs in, and then cover it with salt.

3. Cover the pot and reduce heat to low for about 10 minutes. Turn off the heat when you smell the aroma of crab, and use the remaining heat of the salt to simmer for 10 minutes.