1. soak the mutton with bones again.

2. Remove blood and wash, and the mutton with bones separates the bones from the meat.

3. Cut the onion into long sections and slice the ginger.

4. Chop onions and parsley.

5. Fill the pot with water and cook the cut sheep bones for half an hour.

skim off the scum

7. Pour the mutton again

8. Add star anise, onion and ginger slices.

9. After boiling, skim off the foam and season with salt. Sprinkle chopped green onion, coriander and vinegar when drinking.