1. Boil the broth (pork bones and chicken are simmered together to filter out the clear soup of meat and oil) for use.

2. Buy back dried bacteria (sold in grocery stores), soak them in cold water for half an hour and wash them.

3, put the washed bacteria in the broth, you can also put a few medlar, boil and simmer 1 hour, add light salt and chopped green onion. No other seasonings, especially monosodium glutamate chicken essence.

4. If the method is too complicated, you can also use: blanch the ribs (or pork bones), skim the floating foam, add light salt, add washed fungus, and simmer for 1-2 hours, of course, the taste is not as good as before.

Note: soup is made of bacteria, and soup should be the main one. Don't put too much bacteria, or the soup will not be fresh.