1. The duck skeleton is blanched and cleaned.
2. Cut some skin ginger slices.
3. Put the duck bones and ginger slices in a pressure cooker, add an appropriate amount of water, cover and boil on high heat, turn to medium heat and press for 15 minutes.
4. While boiling the soup, peel and cut the yam into sections, blanch them, and wash them for later use.
5. The duck bone soup has been boiled for 15 minutes, turn it on and add the yam to the soup and boil for 15 minutes to adjust the salt (no need to cover and cook).
6. Finished picture.
7. Finished picture.
Tips:First cook the duck skeleton to get the umami flavor and then cook it with the yam, the yam is easy to cook