The method of black fish head yam soup is as follows:

1. Prepare ingredients.

2. Peel the yam, wash it and cut it into thick slices for later use.

3. Remove gills, scales and fish mouths from the tail of the black fish head, wash and chop into large pieces.

4. Heat oil in the pot, add ginger slices, stir-fry fish heads and fish tails.

5. Add water filled with fish pieces.

6. Add wine and cook for 5 minutes.

7. Stew for 20-30 minutes on medium heat.

8. Add yam.

9. Bring the fire to a boil, and stew over medium heat until the yam is cooked.

10. Add some salt and bring the pepper to a boil.

1 1. Add some medlar and sprinkle with chopped green onion.