1. The bone was removed from the pig's trotters. This step allows suppliers to do it for them.

2. Soak hooves with salt and pepper evenly for one night.

3. Prepare salt, pepper, star anise, cinnamon, ginger, fragrant leaves, dried Chili, onion, Chili noodles, pepper, crystal sugar, cooking wine, soy sauce, soy sauce and oyster sauce for later use.

4. Roll the pickled pig's trotters into rolls, and then tie them tightly with ropes.

5. put water in the pot, add cooking wine and ginger, and add hooves.

6. Put all the materials in step 3 into the pressure cooker and add a proper amount of water.

7. Boil the water to remove the foam oozing from the hoof.

8. Press in a pressure cooker for 30 minutes.

9. Turn off the fire and simmer for another 20 minutes without opening the lid. You can eat it overnight.