The method is as follows:

The first step is to take an appropriate amount of grapefruit peel and wash it, then use scissors to cut the grapefruit peel into small pieces and put it into a pot, then add an appropriate amount of water and cook it over high heat. open.

The second step is to boil over low heat for 15-20 minutes, then squeeze out the water from the grapefruit peel and discard it.

The third step is to add rock sugar to the remaining soup water, then pour it into a bowl and let it cool before drinking.