Materials: 400g of pig spine, 450g of yam and 0/00g of walnut/kloc.

Accessories: salt and water.

1, wash the pig spine and blanch it in cold water in a pot.

2. Rinse with clear water after blanching, and fill the pressure cooker with clear water at one time.

3. The fire is boiled until it is exhausted, and it is changed to a small fire for about half an hour.

4. In the process of stewing pig bone soup, prepare walnuts.

5. Take out fresh walnut kernels and wash them with clear water for later use.

6, a yam, peeled.

7. Wash and cut into pieces.

8. Add walnuts and yam to the cooked pork bone soup.

9. Bring the fire to a boil and simmer for about 30 minutes.

10. After opening the lid, season with appropriate amount of salt.

1 1, finished product.