2. Wash the swimming crab several times with clear water, and never use your hands.
3. Pour the white wine into the washed swimming crab and scrub it again when the swimming crab is unconscious.
4. Cut the onion, ginger, star anise and pepper into pieces and put them on the plate for later use.
5. Put water in the pot, add the swimming crab after the water boils, pour the ingredients into the plate and steam for 15 minutes.
6. Open the lid after the swimming crab is steamed.
7. Take a plate, add chopped ginger and garlic, and pour in soy sauce and vinegar.
8. Put the steamed swimming crab on a plate and dip it in seasoning when eating.