Rinse grapefruit peel with baking soda. Remove all the white skin of the grapefruit’s peel. Boil it boil and discard the water three times. Then sliced it into strips.

Put into a pot, add sugar and water. Boil until almost dry, add lemon juice, scoop up, let it cool down. Sprinkle with sugar, eat like a snack or make a cup of tea.