Yam Pork Bone Soup
1.
Wash the pork bones, add water, cooking wine, and ginger to a boil, wash away the foam.
2.
Wash the yam, peel and cut into pieces.
3.
Put the pork bones in the pressure cooker.
4.
Add yam.
5.
Add cooking wine, ginger and appropriate amount of water, boil on high heat until airy, and continue to cook for 7 to 8 minutes.
6.
After decompression, add salt and chicken essence to taste.