Exercise:
1: Wash the dirt on the surface of the bought raw duck eggs and put them in a glass bottle to dry.
2: Pour water into the pot to boil, add salt and cook until it is completely dissolved, and let it cool.
3. Roll the dried duck eggs in the white wine just enough to soak the eggs, then put them in glass bottles and arrange them one by one.
4. Pour the thoroughly cooled boiled water into the glass bottle, cover it with a sealing cover, and seal it in a cool place at room temperature. You can eat it for 35-45 days.