Sweet and sour, after the refrigerator is chilled, summer hot drinks!
Wash the arbutus, soak it in light salt water for half an hour, then remove it for later use.
Take a pot, add the cleaned bayberry, rock sugar, add the right amount of water, cook until the color of the water becomes dark red, and the sugar can be dissolved.
Can be quoted after cooling. It is better after being placed in the refrigerator.