1. Bought crayfish, washed it several times, soaked it in flour for 20 minutes, washed it again, and removed the head and shrimp line of crayfish. 2. Peel and shred ginger, shred onion, cut green pepper into small pieces, and cut dried pepper into small pieces. 3. Put the crayfish tail cold water into the pot, boil it for 5 minutes, then take it out and drain it with cold water. 4. Heat the oil pan, add a proper amount of cooking oil, add shredded ginger, shredded onion and dried Chili to stir-fry for fragrance, and add the chafing dish bottom material to stir-fry for red oil.