also: ちゃが · ちゃがー
chaga mushroom
A medicinal mushroom (Inonotus obliquus) that grows mainly on birch trees. Often consumed as tea. The Japanese name 樺のあな茸 (かばのあなだけ) is also used.
from Russian
See also: カバノアナタケ
Chaga is popular as a health tea.
In Russia, chaga has been used as a folk medicine since ancient times.
Borrowed from Russian чага (chaga).