expression, noun
snack with drinks; drinking accompaniment
Refers to food eaten while drinking alcohol, like appetizers or small dishes that go well with sake, beer, etc.
酒のお供に枝豆を頼んだ。
I ordered edamame as a snack with my drink.
このチーズは酒のお供にぴったりだ。
This cheese is perfect as a snack with drinks.
Compound of 酒 (sake, alcohol) + の (possessive particle) + お供 (companion). Literally 'a companion for alcohol', referring to food that accompanies drinks.