1. After washing the beans, put them in a bowl of clean water, scatter some salt, and sterilize them.
2. Bring water to a boil in the soup pot, put the soaked beans in and cook for 15 minutes. Turn off the heat for a while after the bean fragrance comes out. Take it out and put it in the salted water just now.
3. Dry
4. Dry
5. Dry
6. After three days, it was completely dry, so that it would be stunned.
7. Put it away and keep it dry.
