also: からさけ
noun
Archaic term for vinegar. In modern Japanese, 酢 (す) is the standard word. からざけ may appear in historical texts or classical literature.
古文書には「苦酒」を調味料として使う記述がある。
In old documents, there are descriptions of using 'karazake' (vinegar) as a seasoning.
The modern standard word for vinegar. 苦酒 is its archaic equivalent, rarely used today.
The exact derivation is uncertain. The kanji 苦 (bitter) and 辛 (spicy) suggest a sour or pungent taste, but the historical origin of the reading からざけ is unclear.