1. Turn the intestinal head over and turn it over with water. With the momentum of water, it is easy to turn the intestines over. 2. Turn over the fat intestine to remove lymphatic vessels and fatty oil. 3. Put the fat sausage in water with white vinegar and flour, rub it repeatedly and clean it. 4. Rinse and soak with clear water. 5. Put the washed fat sausage in a cold water pot, add onion, ginger, star anise and thirteen spices, and cook over high fire until it is 80% cooked. 6. Take out, cool and cut into diamond-shaped blocks. 7. Blanch in a boiling water pot, remove and drain. 8. Make sauce with cooking wine, salt, soy sauce, white vinegar and starch. 9. Wash the green and red peppers, remove the stalks and seeds, and cut into pieces. 10. Put the wok on the fire, put the oil, heat it to 60%, and add the garlic slices to stir fry. Add the fat sausage, stir-fry the green pepper, pour in the sauce and stir well.