noun
green-cracking russula; quilted green russula; green brittlegill
A type of edible mushroom, Russula virescens. Common names in English include green-cracking russula, quilted green russula, and green brittlegill.
この森では夏になるとアイタケが採れる。
In this forest, you can pick green-cracking russula in the summer.
The name あいたけ likely derives from 藍 (ai, 'indigo') + 茸 (take, 'mushroom'), referring to the mushroom's greenish cap. The exact historical derivation is uncertain.