1. Prepare ginger slices
2. Soak pig tail bone in clean blood and wash it
3. Scoop up the pot and wash it under cold water
4. Wash yam and sweet corn
5. Yam peeled and cut into hob pieces soaked in water
6. Sweet corn cut into sections
7. Bring the ginkgo to a boil in a pot of cold water in advance, and then cook for 10 minutes.
8. In addition to the ginkgo, add all the ingredients to the electric pressure cooker and add ginger slices
9. Pour in the right amount of cooking wine
10. Press for 25 minutes to boil the soup
11. Then the exhaust is opened to add ginkgo
12. Add salt to taste and boil again
13. Serve
Tips:1. This soup is very delicious, I didn't add chicken essence, you can add it if you like.
2. After dicing the yam, immerse it in clean water immediately to prevent it from turning black.
3. My ginkgo is peeled with boiling water by myself. It is almost 80% ripe, so I wait for the last to add.
4. Use a pressure cooker to cook the soup and cooking wine appropriately, and the taste of the wine will affect the delicious
