1. First, you need to prepare the ingredients. 10g of black plum, 5g of hawthorn, 3g of tangerine peel, and appropriate amount of rock sugar according to your own taste.
2. Put the black plum, hawthorn and tangerine peel into the water and bring to a boil.
3. After boiling the water, turn down the heat and simmer for 10 minutes.
4. Then add rock sugar and simmer for 10 minutes before use.