1. The pigskin is first blanched and thawed, scraped off the grease, hair, and washed
2. Shred
3. Put it in the pot, add water and all the auxiliary materials, the final boiled water should just spread over the pigskin
4. Cook for 1 hour, and finally accept the excess water from the fire
5. Put the boiled water in the container and put it in the refrigerator overnight
6. Slice and plate
7. Pour the tuned sauce on it and let it go.
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