1. Wash the main ingredients and soak in cold water for 20 minutes
2. Put the main ingredients into the non-woven fabric, boil on high heat, turn to low heat and cook for half an hour, add rock sugar and mint leaves
3. Discard the non-woven fabric, sprinkle it with sweet-scented osmanthus, and put it in the refrigerator after it has cooled. The sweet and sour plum soup is just fine
Tips:It must be sweet enough, otherwise the sour will not taste good
