sweet white sake
A traditional Japanese sweet, opaque sake made from rice and koji, often served at festivals and celebrations.
ひな祭りには白酒を飲む習慣があります。
There is a custom of drinking sweet white sake on Girls' Day.
doburoku (unrefined sake)
In some contexts, 白酒 can refer to doburoku, a cloudy, unrefined sake. This usage is less common and may be regional or historical.
See also: 濁酒
この地方では白酒をどぶろくの意味で使うことがある。
In this region, 白酒 is sometimes used to mean doburoku.
The word 白酒 literally means 'white sake', referring to its opaque, milky appearance. The exact historical derivation is uncertain, but it has been a traditional drink in Japan for centuries.