Seasoning: none

Practice steps:

1 First, you need to wash the grapefruit with proper amount of salt and water.

2. Then cut the grapefruit skin and cut it into suitable filaments.

3. Then put a proper amount of grapefruit into a bowl and add a proper amount of salt to knead.

4. Then add a proper amount of water to the pot, add a proper amount of shredded grapefruit to boil, and then remove a proper amount of shredded grapefruit and wash it.

5. Then put some water in the pot, add some shredded grapefruit and peeled grapefruit meat.

6. Immediately after the fire boils, turn to low heat and cook for about 30 minutes, and add appropriate amount of rock sugar.

7. Finally, cook for about 10 minute, and cook until it is thick as shown in the figure, thus completing the rock sugar citron tea.