Japanese tea glossary
Chasen
Short answer: a chasen is a bamboo whisk used to mix powdered green tea with hot water. In chanoyu, its form and use may vary by tea school and type of preparation.
Use in chanoyu
The official Omotesenke glossary defines the chasen through its function. This school states that it uses smoke-stained bamboo whisks, but that appearance is not a universal rule. In an Omotesenke procedure, the host puts hot water in the chawan, examines the chasen and swishes it in the water. This sequence, chasentōshi, is an inspection and ritual action, not sterilisation.
Tine count and origin
Takayama chasen is an identified traditional craft of Nara Prefecture, mainly produced in Ikoma. The official craft source documents many forms according to school and intended use, including usucha, koicha, outdoor tea and tea-box procedures. It describes 60 to 240 strands depending on style.
The number is not a universal quality scale. Simplistic rules for buyers such as “80 tines for beginners, 100 for better foam” are not enough. Check the intended use, material, origin, maker and model-specific guidance. The word “chasen” alone proves neither Japanese manufacture nor handmade production.
Official sources
- Omotesenke, official chanoyu glossary
- Omotesenke, procedure and chasentōshi
- Traditional Craft Industries Promotion Association, Takayama chasen
Sources checked 13 July 2026.
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Definition checked 13 July 2026.