1. Put the southern snail in clean water for half an hour and wash it. 2. Preheat the crude salt in the pot, then put the snail in and bury it. Be careful that the screw can't directly touch the pot. 3. Bury the snail and cover the pot. Bake on low heat 15 to 20 minutes. Can't exceed this time, the meat will be too hard. Turn off the fire and simmer for a while, then you can eat.