In ginkgo supermarket, vacuum packaging is already nuts, just use a small bowl. Peel and cut the yam, and peel and cut the lotus root.
Blanch the ribs in boiling water 10 minute, pour off the water, and then add water to the soup pot.
Slice onion and ginger.
Add ginkgo biloba, lotus root, ribs, onion and ginger, boil over high heat and simmer for an hour and a half.
Finally, add yam and salt and cook for half an hour.