also: こうちゃきのこ
noun
kombucha
A fermented tea drink originally from northern China, made by fermenting sweetened tea with a symbiotic culture of bacteria and yeast (SCOBY). Not related to 昆布茶 (kelp tea).
最近、健康のために紅茶キノコを飲み始めた。
Recently, I started drinking kombucha for my health.
紅茶キノコは発酵飲料の一種です。
Kombucha is a type of fermented beverage.