1. After buying the trotters, ask the owner of the vegetable farm to burn the skins, cut them into pieces, and soak them in warm water at home.
2. Scrape the surface of the pigskin with a knife
3. Remove the internal organs of the black-bone chicken and wash it
4. Put the pig's trotter into the pot with cold water, let it boil for 1 minute, remove it, repeat step 2
5. Add a lot of water to the soup pot, put the trotters and black-bone chicken into the pot, add slapped old ginger, and bring to a boil
6. Quickly skim off the froth, then add rice wine and white pepper, stir well, cover and simmer over low heat for more than 2 hours
7. Add an appropriate amount of salt and cook for 1 minute. Turn off the fire
8. Finely chop the leeks, add some salt, and mash them together with garlic
9. Add chili oil, soy sauce, and 2 tablespoons of leeks and garlic in the dipping dish. Serve with soup when you eat
