How do salted duck eggs produce oil?

Accessories: star anise, salt, pepper and white wine.

1, prepare materials.

2. After the water is boiled, add the triangle and pepper.

3. Then add salt until water can't dissolve salt.

4. Add white wine.

5. Wash duck eggs with water.

6. Soak the washed duck eggs in white wine with good surface moisture.

7. Put the soaked duck eggs in pre-cooked water and seal them for one month.

8. After one month, take out the duck eggs and cook them.