2. Clean the hair on the elbow, scald it, scrape it with a knife, and then clean it;

3. Cut the mushrooms into small pieces for later use;

4. Put water in the pot, put in the cleaned elbow, and pour out the water after the fire boils;

5. Add water, elbow, ginger and onion; After the fire boils, change to low heat and simmer slowly;

6. After stewing for 3 hours, add mushrooms and salt;

7. stew until the mushrooms are cooked.