Material
| Sour radish | The right amount |
| Old duck | Half |
| ginger | 5 tablets |
| chopped green onion | The right amount |
| salt | The right amount |
Lao duck cut into pieces and blanched for future use. Sour radish slices.
Put enough water in the casserole. Lao duck and ginger slices. After the fire boils, turn to low heat and simmer for one and a half hours. Finally put the sour radish and stew for another 20 minutes. Season with salt before turning off the flame.
Sprinkle green onion before drinking.