Accessories: dried oyster 100g, 50g medlar, a little salt.

Steps:

1. Prepare pork tenderloin, dried oysters and medlar.

2. Buy pork loin and soak it in salt water for one hour.

3. After the pork tenderloin is soaked in salt water, you can do another thing at the same time, that is, wash the medlar and dried oysters, add cold water to the pot and cook for half an hour on low heat.

4. Soak the pork loin in salt water, wash it with clear water for five times, and add salt, monosodium glutamate and potato powder.

5. Stir well.

6. Pour the mixed pork tenderloin into the cooked soup.

7. Add salt monosodium glutamate and cook for 10 minute. You're done!

8. Pork kidney soup can be served in a bowl.