The chasen is carved from one length of bamboo, its end split into fine tines that are curved inward and separated by a thread. It is the tool that makes matcha possible: powder and water do not combine adequately by stirring.
Construction and varieties
Tine counts run from around sixteen to over a hundred; the finer whisks are used for thin tea, where a stable foam is wanted, and coarser ones for thick tea, which is kneaded rather than aerated. Bamboo colour also varies by use and by school — white for many purposes, smoked or black for particular occasions. Takayama in Nara Prefecture has been the centre of production for some five hundred years, and whisks are still made by hand there.
Handling and lifespan
A chasen is soaked in warm water before use to soften the tines and reduce breakage, and rinsed and reshaped afterwards on a ceramic stand. Tines break with use, and a whisk is treated as a consumable rather than a treasure — a point of contrast with the bowl or the tea container. Some schools observe a practice of retiring worn whisks formally rather than discarding them.
Buying one as a beginner
Most classrooms provide whisks for lessons, so a beginner need not buy one immediately. A student who does should expect to replace it periodically, and should choose the tine count according to whether the class serves mainly thin or thick tea.
Sources
- 茶筅（デジタル大辞泉 / 日本大百科全書 / 改訂新版 世界大百科事典） / コトバンク
Supports: 茶筅が「抹茶をたてるとき、かきまわして泡を立てたり、練ったりする竹製の具」であり、9センチくらいの竹筒の半分以上を細く割って穂とすること。初見が中国宋代の文献にみえるとされること
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
- Chashaku (tea scoop)chashaku
A slender bamboo scoop for measuring matcha, often carved by the host and given a poetic name.
- Chawan (tea bowl)chawan
The bowl in which tea is whisked and drunk — usually the most closely examined object in a gathering.
- Matchamatcha
Shade-grown green tea leaf stone-ground to a fine powder, whisked into water rather than steeped.
- Koicha (thick tea)koicha
Matcha kneaded with a little water into a thick paste, traditionally shared from a single bowl; the centre of a full gathering.
- Usucha (thin tea)usucha
Matcha whisked lightly to a foam and served one bowl per guest; the form of tea most people meet first.
- Higashi-bon (tray for dry sweets)higashi-bon
A flat tray on which dry sweets are arranged and offered with thin tea.