warming up sake; warmed sake
Refers to both the act of heating sake and the resulting warm sake. Commonly seen in phrases like 燗をつける (to warm sake) or 燗酒 (warm sake).
On cold days, warmed sake is delicious.
At this izakaya, warm sake is popular.
The kanji 燗 is composed of 火 (fire) and 間 (interval, space), suggesting the application of gentle heat. The reading かん is the on'yomi. The word has been used for centuries in the context of sake preparation.