Cooking steps:
1. Melt the chicken wings and wash them.
2. Cut the onion, ginger and garlic into sections and prepare the star anise.
3. Put down the water pot and cook for 5 minutes, skim off the blood foam and take it out.
5. Heat oil in the pot, add sugar and stir fry until the sugar turns yellow and there are small bubbles.
6. Add chicken wings and stir fry quickly
7. Add onion, ginger, garlic and pepper to cook wine and stir fry.
8. Add water, salt and star anise, and stew in a pressure cooker 12 minutes.
9. Pour into the wok from the pressure cooker and cook the remaining soup.
10. Is the soup off?