Ingredients: 50 grams of ebony, 30 grams of hawthorn, a few grams of licorice, some rock sugar, brown sugar.
Prepare materials, 50 grams of dark plums, 30 grams of hawthorn, 5 grams of licorice, a few pieces of rock sugar, a little brown sugar. Tartness of licorice.)
Wash shamisen material and soak in water for 1 hour.
Pour it into a saucepan and bring to a boil over high heat, then turn on low heat and simmer for about half an hour until ingredients almost taste same.
(Weigh amount of water yourself, I didn't measure.) Add powdered sugar and brown sugar when it's almost done.
Filter remainder and that's it. In summer it tastes better chilled.