Materials: 2 tubular bones, 2 lotus roots and 600g yam.

Accessories: 2g salt, 3g ginger and 2g cooking wine.

1. Wash the cylinder bone with warm water and soak it in cold water for 2 hours, and then change it into clean water after half an hour. Wash lotus root and yam for later use.

2. Soak the clean barrel bones and add ginger slices.

3. Add water and pour the wine into the soup mode.

4. After1hour, the soup turned white. At this time, add the washed and cut lotus root.

5. Cook for 1 hour, then add yam and continue to cook for 20 minutes.

6. Season with salt.

7. Ready to eat.