Pour 2 bowls of pure water into a pot, put about 20 umeboshi and cook for 10 minutes on low heat.
After boiling, add sugar and salt and cook for another 2-5 minutes.
The concentrated umeboshi juice comes out of the oven, cool it down and pour it into the storage and put it into the refrigerator for 1-2 days.
Drink it with ice water in the ratio of ?
Plum Juice Concentrate: Ice Water = 1:2