酒しゅ石せき

noun, noun which may take the genitive case particle 'no'

tartar; wine stone

Technical term for the crystalline deposit (potassium bitartrate) that forms during wine fermentation and aging. Also used attributively in compounds like 酒石酸 (tartaric acid).

• ワインの樽たるの底そこに酒しゅ石せきが沈ちん殿でんしていた。

  Tartar had settled at the bottom of the wine barrel.

• 酒しゅ石せき酸さんはワインに含ふくまれる有ゆう機き酸さんの一ひとつだ。

  Tartaric acid is one of the organic acids found in wine.