2. Wash the crabs and put them in a steamer. Be sure to put the crab navel up. Add half a pot of water to the steamer. In order to prevent live crabs from losing their claws, put them in the refrigerator for about half an hour, and then take them out for steaming.
3. Cut the onion and slice the ginger.
4. Sprinkle onions and ginger on crabs. Sprinkle the right amount of salt evenly.
5. First, turn the fire on, and then turn to medium heat. In fifteen minutes, the pot will be ready to cook.
6, set the plate, fresh and delicious crabs can be served. If you like to dip mustard or triple heavy oil, you can make a small dish separately.