The method is as follows:

1. Prepare all the ingredients;

2. Wash the other ingredients except rock sugar;

2. Clean and put it into the pot, add an appropriate amount of water, cover the pot, bring to a boil over high heat, turn to medium to low heat and simmer for 20 minutes

3. Add rock sugar and continue to cook for a while, turn off the heat and simmer for a while. Just know it.