1. Wash soybeans and soak them for 2 hours in advance.

2. Chinese wolfberry and hawthorn are soaked in water and washed.

3. Slice the ginger and tie the onion tightly.

4. Wash and drain the soaked soybeans, medlar and hawthorn.

5. Pig feet and trotters (hereinafter referred to as pig feet) are washed and cut into small pieces.

6. Put the pig's trotters in the pot, blanch them with cold water, take them out after the water is boiled, rinse off the floating foam and drain the water.

7. Put the scalded pig's trotters back into the pot, add them to 80%, and turn on the fire.

8. After the water is boiled, skim off the floating foam, add the yellow wine, ginger and onion, and pour the soybeans, medlar and hawthorn into the pot at the same time. When the fire boils, turn it down.

9. At this time, the yam is treated, washed, peeled, cut into hob pieces, soaked in salt water and added with a little white vinegar.

10. 1 hour, turn to high heat and add yam, then turn to low heat again after boiling.

1 1. Cook for another 30 minutes, season with salt, and take out.