1. Rinse all the ingredients with clean water, then soak for 40 minutes.
2. Pour the soaking water and ingredients (except osmanthus) into the pot together. The amount of water is appropriate according to the ingredients, and as little as possible.
3. Bring to a boil on high heat, then turn to low heat and simmer slowly. About half an hour.
4. Finally, turn off the heat, add enough rock sugar or honey, sprinkle some sweet-scented osmanthus, let it cool, and put it in the refrigerator, which is more suitable for summer drinking.
