2. Practice: Feed the hairy crabs in the water for 2 hours after buying them, and let the crabs spit out the dirty things in their stomachs, and change the water several times during this period.
3. Wash the crab with a brush, cut the onion into sections, and shred the ginger in half. Put a proper amount of water in the steamer, spread onion and shredded ginger on the steamer, and put the hairy crabs in. This method does not tie the crab legs.
4. After the fire is boiled, steam 15-20 minutes. Wash the other half of the ginger, peel and chop it, and mince the garlic. Then evenly mixing with rice vinegar and salt to make a sauce, and finally steaming the crab and eating with the sauce.