1: Boil pigskin with cold water, add a tablespoon of cooking wine and a few slices of ginger for 3-5 minutes. 2. Remove the pigskin, scrape off the surface grease with a knife, cut it into thin strips and wash it several times. 3: Add 3 bowls of water to another pot, add shredded pork skin, onion, ginger, star anise, pepper and salt, boil for 50 minutes on low heat, and turn off the heat after the shredded pork skin is soft and rotten. 4: Remove the spices and add 2 tablespoons of light soy sauce for color matching. Pour into a container and refrigerate. Slice after solidification.