Yohen refers to the appearance produced on a vessel's surface by effects the maker cannot fully control: the movement of flame in the kiln, temperature, and the covering of ash. It is used chiefly of unglazed high-fired wares, valuing colours and patterns that appear unexpectedly. It is beauty brought by natural forces beyond the maker's intention, and finding interest specifically in what human agency cannot reach is characteristic of how tea practice looks at objects.
History
Within the tradition of unglazed stoneware fired at high temperature without reliance on glaze, the changes chance produces in the kiln became the thing to look for.
In practice
Bizen, Shigaraki, and Iga are the wares where yohen is most sought. Because the effect cannot be repeated, each piece is unrepeatable in a literal rather than a rhetorical sense — which is why the encounter with a particular piece is spoken of in the language of ichigo ichie.
Sources
- 窯変（デジタル大辞泉 / 日本大百科全書） / コトバンク
Supports: 窯変が「陶磁器を焼く際、炎の性質や釉の含有物質などが原因で予期しない釉色・釉相を呈すること」であること
About this article
Edited by the operator of Chaen (a one-person operation) / Last updated:
Tea ceremony descriptions can vary by school and source. Where interpretations differ, this glossary avoids definitive claims and focuses on broadly shared understandings. If you notice an error, please let us know viaContact. To learn about our organization, seeAbout Chaen.
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Related terms
- Chado (The Way of Tea)chado
The Japanese practice of preparing and serving powdered green tea, treated as a lifelong discipline rather than a beverage ritual.
- Wabiwabi
Finding sufficiency of mind within insufficiency and plainness; one of the root concepts of tea practice.
- Ichigo ichie (one time, one meeting)ichigo ichie
The principle that every gathering is unrepeatable, and should therefore be treated as if it will never occur again.
- Tatami-tsuki (the standing surface)tatami-tsuki
The part of a vessel touching the mats — the outer circumference of the foot, where wear accumulates.
- Kannyu (crazing)kannyu
Fine cracks in the glaze surface, technically a flaw but valued in tea as an appearance that develops with use.