1. Wash beans, star anise and pepper, and air dry them outdoors for about 3 minutes;

2. cut the washed beans into even small particles;

3. Add salt into chopped peppers, star anise and chopped beans and stir well;

4. Put the stirred beans into a clean glass bottle;

5. After installation, gently press it with a spoon for a few times, and the strength should not crush the beans;

6. Prepare a fresh-keeping bag, fold it in half, and put it above the beans in the bottle;

7. After pressing, turn the bottle over so that the beans do not fall out.

8. Prepare a sealed bag, and inject a small amount of water until the water just overflows the lid of the bottle;

9. Pour the bottle full of beans into a sealed bag with water for one week.