1.
wood ear mushroom, cloud ear fungus
A dark, ear-shaped edible fungus with a crunchy, gelatinous texture. Commonly used in stir-fries and ramen.
Writing
Usually written in katakana as キクラゲ. The kanji 木耳 (literally "tree ear") exists but is rarely used.
Etymology
The name comes from 木 (tree) + クラゲ (jellyfish), because the fungus grows on trees and has a jellyfish-like texture.