Learn how to care for your matcha whisk (chasen) to extend its life and keep it performing at its best. Simple daily habits can make a big difference.
When you first open the box
Your chasen may be lightly glued to the bottom of the box. Gently pull it forward to remove it. You’ll likely see some glue and paper stuck to the base—this is completely normal.
Steep the chasen in warm water for about 15 minutes. This softens the glue and allows you to gently wipe it off with your fingers or a tissue. Let it air dry fully before first use.
Before each use
Always steep your chasen in warm water before whisking matcha. Bamboo is sensitive to sudden temperature and humidity changes, so this quick step helps prevent damage and keeps the tines flexible.
A practical way to do this is to prepare two servings of water at about 85°C (185°F). Use the first portion to steep your chasen in the matcha bowl—this softens the tines and warms the bowl at the same time while you get everything else ready. Once done, discard this water and gently wipe the bowl dry.
The second portion, now naturally cooled to around 80°C (176°F), will be just right for whisking your matcha. This small step not only protects your whisk but also mirrors the chasen-tōji (茶筅湯治) process used in Japanese tea traditions.
After each use
Rinse your chasen as soon as possible after making matcha to avoid buildup and staining. Use clean water only—no soap—and gently swish the whisk while holding the handle. Avoid scrubbing or soaking the handle.
Shake off excess water by flicking it downward once or twice. Then let it dry naturally in a well-ventilated area, out of direct sunlight. Avoid placing it near heaters or in overly dry environments, as this can cause cracking or warping over time.
Keeping its shape
Over time, the tines of your chasen may begin to open. To maintain its original shape and prolong its use, consider using a chasen naoshi (whisk holder). It helps preserve the curve of the whisk and supports proper drying.
If your whisk shows signs of wear
Even with proper care, natural bamboo can develop small cracks or lose a tine—it’s part of the material’s life. If your chasen still whisks well and brings your matcha to life, there’s no need to retire it right away. Keep using it as long as it serves you well.
