Chasen: what is it really used for
The chasen doesn't mix, it emulsifies. The motion, the care that determines its lifespan, and the number of prongs that truly matters.
L'essentiel
It's the item you buy because it's pretty and then abandon because you don't
understand what it brings. Yet the chasen does one very specific thing, and
it does it better than anything else.
What it does, and nothing else does
Matcha does not dissolve in water: it becomes suspended in it. Each
particle must be detached from its neighbors and coated with liquid,
individually.
A chasen has between 80 and 120 tines, carved from a single block of bamboo then
split and curved. This density creates, with each pass, dozens of micro-
currents that separate the particles and trap air.
A kitchen whisk has eight tines, ten times thicker. It stirs the liquid
without ever achieving this fineness. Hence the difference: with a chasen, the
foam is dense and the matcha remains suspended for as long as you drink it.
Without it, it settles after a minute.
The gesture, in three points
The W, not the circle. Whisk by drawing a W or an M, a rapid
back-and-forth motion. The circular motion creates a vortex that swirls
the liquid without whisking it — this is the most common mistake.
The wrist, not the arm. Only the wrist works. The forearm remains stable.
Seek speed, not strength.
The tines skim the bottom. They should neither scrape nor press. By
crushing the chasen against the bowl, you break the fine tines — the ones that
do all the work.
About fifteen seconds are enough. Finish with a slow circular motion on
the surface to break up large bubbles and smooth the foam.
The complete process is on The Ritual, and detailed gesture by gesture in how to prepare matcha.
Before first use
Do not take it out of its packaging to use it directly: the tines are
dry and brittle, and the first ones will break.
Soak it for two to three minutes in hot water — not boiling. The bamboo
rehydrates, the tines regain their flexibility and spread out. Do this
also, more briefly, before each use: thirty seconds are enough.
Maintenance, or why yours won't last
Three rules, and they explain almost all premature chasen deaths.
Never use soap. Bamboo is porous: it absorbs detergent and will
return it to you in the next bowl. Clear water only, immediately after use,
by agitating the tines in the bowl filled with water.
Never put it in the dishwasher. Heat and jets destroy bamboo in one
cycle.
Dry on a stand, tines pointing upwards. This is the function of the kusenaoki,
this small ceramic stand. It keeps the tines spread out while they
dry, which prevents them from closing in on themselves and molding at the core.
Lying flat in a damp drawer, a chasen will be damaged in a few weeks.
A well-maintained chasen lasts three to six months with daily use. It is a
consumable, not a lifelong utensil: the tines eventually break, which is
normal and expected.
How many tines to choose
The number is engraved or indicated at the time of purchase.
80 tines — the versatile. Dense enough for a good usucha, more robust
than fine models. This is the one to get if you only buy one.
100 to 120 tines — finer, creamier foam, more fragile. For regular use
and ceremonial grade matcha, like our
Ceremonial Matcha.
Less than 70 tines — designed for koicha, thick matcha. Not very suitable for
daily use.
Our Matcha Kit includes a chasen, its stand, and the
sieve — the three items that go together.
Can you do without it
Yes, with accepted compromises. The electric milk frother comes closest:
decent foam, a little coarser. The shaken jar eliminates lumps without making foam — unbeatable in the office.
What doesn't work: the spoon, the fork, and the sauce whisk.
Frequently asked questions
My chasen is losing tines, is it ruined?
A few broken tines over the months are normal. Beyond ten, the
foam degrades significantly: it's time to replace it.
It has blackened at the base, is it serious?
This is mold, caused by insufficient drying. Do not use it anymore.
Switch to drying on a stand, tines upwards.
Can it be used for anything else?
Technically yes, but bamboo retains odors. Reserve it for matcha.
Do I need a special bowl?
No. A wide and not too deep bowl is sufficient — the whisk needs space to
work flat.
