1: Put the pigskin in cold water, add a tablespoon of cooking wine, and cook a few slices of ginger for 3-5 minutes. 2. Take out the pigskin and 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, and cook on low heat for 50 minutes. Turn off the heat after the 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 for setting. After solidification, slice.