1, take out a grapefruit.

2. Peel with a paring knife.

3. Cut the peeled skin into 1cm and soak it in salt water for one hour.

4. Boil the soaked grapefruit peel in boiling water for 3 minutes, then take it out and wash it with cold water for 4 times.

5, rock sugar into the pot, add a small amount of water to boil.

6. Add grapefruit skin and simmer on low heat.

7. Dry the boiled grapefruit peel for later use.

8. After drying, seal and refrigerate.