1. Burn the trotters and soak them in warm water for a while.

2. Scrape the dirt and clean it. Cut the onion into pieces. Cut the ginger into pieces and beat well.

3. Put the pig's trotters in a boiling pot, blanch them, remove them and cool them with cold water.

4. Then put it in a pot, add water (preferably without meat) soy sauce, salt, aniseed, cinnamon, pepper, onion and ginger, simmer on low fire, turn to high fire to collect juice, remove pig's trotters and put them on a plate.