undiluted sake; cask-strength whisky
Refers to sake that has not been diluted with water after pressing, or to whisky that has not been blended or diluted; often used for strong, pure alcohol products.
This undiluted sake has a high alcohol content.
ウイスキー愛好家は原酒の味を楽しむ。
Whisky enthusiasts enjoy the taste of cask-strength whisky.