1. First cut the roast duck rack with a knife, as shown in the figure.
2. Wash the white radish and cut it into pieces with a knife.
3. Then pour the duck rack, radish and appropriate amount of water into the pot to boil.
4. After the water is boiled, simmer 1 hour, and the salt must be put last, otherwise the soup will not be so white.
After the time is up, serve duck soup, add a little salt, a little sugar, a little pepper and a little chopped green onion, and you can eat it.