1. Put the pigskin in a cold water pot, add star anise, pepper and cooking wine, and cook for 10 minute. After taking it out, scrape the grease off the pigskin with a knife.

2. Cut the pigskin into small strips with kitchen scissors. Then boil a pot of warm water and wash the pigskin repeatedly until the water for washing the pigskin becomes transparent.

3. Find a bigger bowl, put the washed pigskin into the bowl, and pour in cold water. The water level is 4 cm higher than the pigskin.

4. Just steam on low fire for 90 minutes, let it cool and put it in the refrigerator. Frozen pigskin jelly will be elastic when pressed by hand. ) slice and serve.