noun
sake served in a masu; sake sold in a masu
Refers to sake (or occasionally other alcohol) that is either served in or sold in a small square wooden box called a masu. This is a traditional way of drinking sake, often associated with celebrations or old-style izakaya.
居酒屋で升酒を頼んだら、枡からこぼれるほど注いでくれた。
When I ordered masuzake at the izakaya, they poured it so generously that it overflowed from the masu.
お正月には升酒で乾杯するのが我が家の習慣です。
It's our family custom to toast with masuzake on New Year's.
Compound of 升 (masu, a small square wooden box) and 酒 (sake, alcohol). The word refers to sake that is served or sold in a masu.