noun
nameko mushroom
A small, amber-brown mushroom with a characteristic slippery cap, widely used in Japanese cuisine, especially in miso soup and nabemono.
味噌汁にナメコを入れると、とろみが出て美味しい。
Adding nameko mushrooms to miso soup gives it a nice thickness and flavor.
The name likely derives from the mushroom's slippery texture, related to the word 滑る (nameru, 'to be slippery').