The four-and-a-half-mat room is the most widely used reference size for a tea room: four full mats with a half mat at the centre, in which the hearth is cut. Treated as a large room when read as an extension of shoin architecture and as a small room when pushed toward the thatched style, it sits symbolically on the boundary between the two.
Origins
Murata Juko is said to have begun wabi tea in a four-and-a-half-mat room, and Takeno Joo and Sen no Rikyu both built on the same dimension. The hearth cut at the centre gives the space a focal point, and produces yojohan-giri, the basic way of positioning a hearth.
In practice
The size accommodates four guests and a host, which is the standard composition of a full gathering. Because it is neither the extreme reduction of a two-mat room nor a large formal space, it is the size in which most procedures are taught.
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.
- Hiroma (large room)hiroma
Tea spaces larger than four and a half mats, suited to open gatherings and shoin-style formality.
- Koma (small room)koma
Tea rooms of four and a half mats or fewer, where the spirit of wabi tea appears most strongly.