1. Rinse duck feet, pot under cold water, put ginger slices and cooking wine;
2. Put the fire to a boil
3. Pour out and rinse with cold water.
4. Pour into a saucepan and add enough water;
5. The fire boiled, and all the foam was wiped out;
6. Put sour radish old duck soup;
7. Bring to a boil over medium heat, cover, and simmer on low heat;
8. Simmer for about two hours.
