1. After washing the soybeans, soak them in water and store them in the refrigerator overnight.
2. Before use, rinse again and drain for later use.
3. Chop the pig's knuckles (it's best to have someone at the supermarket chop it for you).
4. Put the washed trotters into the pot and pour clean water all at once.
5. Bring to a boil on high fire.
6. Slice ginger and prepare other seasonings.
7. After opening the lid, skim off the foam.
8. Add ginger, cooking wine and aniseed.
9. Add soy beans.
10. Cover the lid and simmer for more than 2-3 hours.
11. Just add salt before eating, and put a few washed goji berries after serving.
