1. Soak the purchased trotters in clean water for 15 minutes. Add 1 tablespoon of white vinegar to the water
2. Then use a knife to scrape off the remaining fine hairs on the trotters, cut the green onion and ginger into sections for later use, and scald the depilated trotters with boiling water twice to remove the blood and impurities in the trotters, and finally rinse off.
3. Put the washed trotters into a pressure cooker, add star anise, cinnamon, green onion and ginger, add 2 teaspoons of white wine, 2 teaspoons of soy sauce, and 1 teaspoon of light soy sauce
4. Mash 1 piece of fermented bean curd and pour it into the pot along with the juice
5. Add 2 teaspoons of sugar, and finally add 1 large bowl of hot water
6. Cover the pressure cooker and simmer for 1 hour
7. Put the stewed trotters and the soup into the wok and continue to simmer for 15 minutes
8. Keep pouring the soup on the pig's feet until the soup is tightened and ready to be out of the pot
