Accessories: wheat flour 1 spoon, salt.

Steps:

1. Prepare domestic small green lemons and soak them in clear water.

2. Add flour and soak for 10 minute.

3. Take out the lemon and rinse it with water.

4. Let it dry.

5. Prepare sealed glass bottles, rinse them with boiling water and dry them until there is no moisture.

6. Put the dried lemon in the glass bottle.

7, a layer of lemon and a layer of salt, cover the bottle cap.

8. Sealed for more than 1 month.