KanjiJLPT N2
Charcoal

charcoal, coal

Mnemonic

High on the mountain, a wildfire reduced entire forests to ashes. Buried beneath those ashes, villagers discovered layers of perfect charcoal—black, dense, and ready to fuel their hearths all winter long.
Additional thoughts
Picture a smoldering mountainside: the surface is grey ash, but just underneath lies rich black charcoal. Mountain on top, ashes below—just like the kanji's structure (山 over 灰).
Quick recall
A mountain fire leaves ashes hiding precious charcoal underneath.

Details

The keyword for 炭 is charcoal. This kanji refers to the black, carbon-rich material produced by burning wood or other organic matter in a low-oxygen environment. In Japanese culture, charcoal has been widely used for heating, cooking, and in traditional arts such as the tea ceremony, where specific types of charcoal are carefully selected for their burning qualities. The kanji broadly encompasses both wood charcoal and coal as a fuel source.
On'yomi
たん
Kun'yomi
すみ