Chasen
A whisk carved from a single piece of bamboo, split into somewhere between 60 and 120 prongs. Matcha is a suspension rather than an infusion, so nothing dissolves and something has to keep the powder in the water. This is the only tool that does it properly, and it is made in one town.
- Capacity
- 60 to 120 prongs
- Material
- a single piece of bamboo
- Origin
- Takayama, Ikoma, Nara, Japan
- Best for
- usucha at 80 prongs, koicha at around 70
What it is
One node of bamboo, split outward into an outer ring of prongs and an inner ring, tied and curled by hand. The craft is centred on Takayama in Ikoma, Nara prefecture, which produces over ninety per cent of Japan's chasen and where roughly sixteen artisans still practise it. It dates to the Muromachi period, around five hundred years ago: Murata Jukō, the founder of wabi-cha, asked for a proper whisk, and Takayama Minbu-no-jō Nyūdō Sōsetsu made the first one, which was later presented to Emperor Go-Tsuchimikado.
What it does to your tea
It suspends the powder and aerates it. More prongs means finer, more flexible tines and a lighter, silkier foam; fewer prongs means stiffer tines with more force behind them. That is why the counts are not decoration: around 70 prongs, sold as kazuho, is stiff enough for koicha, the thick tea that is kneaded rather than whisked, while 80 is the standard for usucha and produces the fine even froth people expect. Counts of 100 and above give the lightest foam of all.
What it suits
Matcha, and nothing else. It is useless for leaf tea and will not survive being used as a general kitchen whisk.
How to use one
Soak the tines in hot water before the first use and briefly before every use after, which softens the bamboo and makes it much less likely to snap. Whisk from the wrist in a rapid W or M motion across the base of the bowl, not in circles, then lift through the middle to break the largest bubbles. Rinse in hot water immediately after.
How to choose one
80 prongs if you are buying one whisk. Buy Takayama-made if you can, and be aware that most inexpensive whisks are machine-assisted imports; they work, they just do not last. The tines should curl inward at the tips rather than splay.
Care and cleaning
Never detergent, never a dishwasher. Rinse in hot water, shake, and dry on a kusenaoki, the ceramic stand shaped to hold the whisk's curve, which keeps the tines from collapsing inward as they dry. Stored wet in a drawer it will grow mould at the base within weeks.
What people get wrong
Treating it as permanent. A chasen is a consumable: tines break, and a whisk in regular daily use lasts months rather than years. The second mistake is skipping the soak, which is what breaks the tines in the first place.
What it is made of
