ume liqueur; plum wine
A sweet Japanese liqueur made by steeping unripe ume in alcohol (typically shōchū) with sugar. Often homemade and served on the rocks, with soda, or straight.
See also: 梅 (うめ)
祖母が毎年梅酒を作っている。
My grandmother makes ume liqueur every year.
Every June, I make (steep) ume liqueur.
I had ume liqueur on the rocks after dinner.
父はいつも梅酒をロックで飲む。
My father always drinks ume liqueur on the rocks.
Mixing ume liqueur with soda water makes it light and refreshing.
I like eating the ume fruit that's been steeped in the liqueur.
梅酒 is a specific Japanese plum liqueur, whereas リキュール is the general loanword covering any sweet flavored spirit.
Compound of 梅 (うめ, 'Japanese plum') and 酒 (しゅ, 'alcohol/liqueur'). The reading しゅ is the on'yomi of 酒 used in many compound drink names.