1. Material: half a lemon, cold boiled water 1500ml, 3 tablespoons of honey (50ml), 25g of rock sugar.

2. Wash and slice the lemon. Because it needs to be soaked with skin, it is recommended to clean the lemon with a small brush.

3. Boil the rock sugar in water and cool it in a container.

4. When the water temperature is lower than 60 degrees, put the lemon slices into the water. Excessive temperature will destroy the vitamins in lemons. )

5. When the temperature is lower than 40 degrees, add honey and stir well. High temperature and hot water will destroy the effective components in honey. )

6. Refrigerate for 3-4 hours before drinking.