1. The peel of 1 grapefruit, 2-3 oranges (take the orange flesh) and 150 grams of rock sugar.

2. Rub the outer skin of the grapefruit with salt and wash it.

3. Use a peeler to peel the grapefruit.

4. Thinly peeled skin. There is no white film.

5. Put the peeled grapefruit peel into a pot and boil water to blanch the grapefruit peel. Cook for about 10-15 minutes.

6. Peel the orange and cut the orange flesh into small pieces.

7. Blend the grapefruit peel into puree with a blender.

8. Stir the flesh of 1 orange into puree. Mix with grapefruit peel.

9. Pour the grapefruit and orange puree into the dry pot and bring to a boil.

10. Add rock sugar. Cook over medium-low heat.

11. Constant stirring is required to prevent sticking to the bottom of the pot.

12. Cook until thick and turn off the heat.

13. Let it cool down before bottling it, then cover it tightly and store it in the refrigerator. If you like to drink grapefruit tea, add an appropriate amount of honey (about 250~300 grams) when bottling to cover the grapefruit sauce. Do not stir, cover tightly and store in the refrigerator for about 20 days, and you will have a very delicious grapefruit. Tea.