Step 1: Wash the grapefruit first, then sprinkle some salt on the surface of the grapefruit and rub it repeatedly to remove the pesticide residue on the grapefruit skin and the fruit wax left by illegal traders.

The second step is to peel off the grapefruit skin with a peeler, and the thinner the better, because the white pulp is easy to be bitter and affects the taste.

Step 3: Cut the pomelo peel into filaments, add the old rock sugar into the casserole, and pour it into clear water to boil.

Step 4: Cook for about half an hour, add peeled grapefruit meat and continue cooking together.

Step 5: Bring the fire to a boil, and turn to low heat to continue cooking.

Step six, continue to cook on low heat for about an hour and a half, and it's so strong. Now, let's see if it's appetizing. So you can add some honey and eat it directly. The most important preservation method is to cool it and put it in a glass bottle for sealed preservation. It is no problem to store it at room temperature for one year! When drinking tea, just scoop out a spoonful with a spoon, add some honey, pour in warm water and stir well. It tastes sour and sweet, and the important thing is that the health care function is also good.