2. Wash hawthorn with light salt water for 3 minutes, sterilize and drain.
3. First, core the hawthorn, and then pour it into the pot. Add water to the hawthorn and squeeze it into the juice of half a lemon. Cook on high heat 15 minutes.
4. Pour the boiled hawthorn and S hawthorn water into the blender and paste it. Then pour the hawthorn into the pot, then pour the rock sugar, turn to low heat, and keep stirring with a spoon until the hawthorn is boiled and scooped up.