1. Soak the oxtail in clean water for 2 hours, change the water in the middle, and then rinse with clean water several times
2. Add cooking wine in a pot under cold water to blanch water to remove blood foam and wash impurities on the surface of the meat
3. Stir-fry rock sugar into amber color, add oxtail, stir fry for color, add seasonings and fry for aroma
4. Add cooking wine, vinegar, light soy sauce, stir fry evenly
5. Add water and simmer for 1 hour, then collect the juice on high heat
