1. Spine wash and blanch
2. Mince green onion, slice ginger and garlic, prepare bay leaves and star anise
3. Heat oil in a pan, add the spine and stir fry
4. Add green onion, ginger, garlic, star anise, and bay leaves to stir fry to create a fragrance
5. Add an appropriate amount of pepper powder and stir well
6. Pour in the right amount of cooking wine
7. Add the right amount of sugar and stir fry
8. Pour in soy sauce and stir fry
9. Pour in the right amount of vinegar
10. Add appropriate amount of water, cover, turn to medium heat and simmer for 30 minutes
11. Add the potatoes and continue to simmer until the potatoes are soft and rotten
12. Add MSG and salt to taste
