Practice:
1) Wash and slice the lemon. Because you want to soak with the skin, it is recommended to use a small brush to brush the lemon clean.
2) Boil the rock sugar in water and introduce it into a container to cool.
3) When the temperature of the water is below 60 degrees, add the thinly sliced lemons. (Too high a temperature will destroy the vitamins in the lemons.)
4) When the temperature is below 40 degrees, mix in the honey and stir well. (Hot water at a high temperature will destroy the active ingredients in the honey.)
5) Put it in the refrigerator for 3-4 hours to drink the best.