Umeshu is a Japanese plum wine made with tart green ume plums. It’s tasty on its own, but it benefits from being paired with something that cuts through its syrupy-sweet viscosity.
Enter the Umeshu Cooler from travel site Savvy Tokyo. It literally could not be simpler: one part plum wine, two parts lemon soda, served on ice. You might want to play with that ratio a bit, depending on the sweetness of your plum wine and your soda.