1. Clean and dry the fresh duck eggs;
2. Soak the duck eggs in white wine, then put them in a salt bowl and coat with a layer of fine salt;
3. Put a layer of fresh-keeping film on the salted egg buns, and then spread them on the plate;
4. Put the eggs in the sun for 1 day, then put them in a bag, put them in a sealed bag, and put them in a cool place at home;
5. Egg butter works well when you eat it for 30 days
