Kyusu: The Complete Guide to the Japanese Teapot

A kyusu (急須) is a Japanese teapot built for steeping loose leaf green tea, and the classic form has a hollow handle set at a right angle to the spout rather than a loop at the back. That side handle is not a style choice. It lets you lift, pour, and set the pot down in one small motion, which matters when you are brewing sencha for forty seconds and every second counts.

Most guides treat the kyusu as one item on a shopping list. This one is about the vessel itself: how it is built, why the filter decides whether you will actually enjoy using it, what the clay does, and how to pick a size you will reach for on an ordinary Tuesday.

Key Takeaways

• A kyusu is a steeping pot for leaf tea. Matcha is whisked in a bowl, not brewed in a kyusu, so the two are not interchangeable.
• The filter matters more than the clay. Deep steamed fukamushi sencha has fine broken leaf that will clog a coarse ceramic filter and stall your pour.
• Tokoname in Aichi Prefecture is the name most associated with kyusu, designated a traditional craft on June 2, 1976, though its red shudei tea utensils are a relatively recent development.
• Buy for how you actually drink. A 200ml to 360ml pot suits one or two people, and an oversized kyusu quietly wrecks your leaf to water ratio.
• Unglazed clay never meets soap or a dishwasher. Rinse, empty the leaf, and let it dry open.

What Is a Kyusu, Exactly?

A kyusu is a small teapot designed around one job: extracting Japanese green tea at low temperature, in short steeps, with a clean stop. Everything about the shape serves that. The body is wide and shallow so leaves can open flat. The filter sits at the base of the spout so liquor separates from leaf. The handle sits where your hand already is.

It helps to be clear about what a kyusu is not. It is not a matcha vessel. Matcha is a powder suspended in water and whisked in a bowl, so there is nothing to strain and nothing to steep. If you want the powdered side of Japanese tea, that belongs to the chawan and chasen, which we cover in our guide to the traditional Japanese tea set.

A kyusu is also not a Western teapot with the handle moved. Western pots are built for long steeps of large leaf at a rolling boil. A kyusu is built for 60 to 80 degrees Celsius, a gram of leaf per fifty milliliters or so, and a pour that finishes completely. For the ratios and temperatures by tea type, our brewing instructions lay them out per tea.

The Handle Types, and Which One Suits You

Kyusu are grouped by where the handle sits, and the names are worth learning because they tell you how the pot wants to be held.

Type	Handle position	Best for
Yokode kyusu (横手急須)	Side, at roughly 90 degrees to the spout	The classic. Sencha and everyday green tea, one hand, fast clean pours
Ushirode kyusu (後手急須)	Rear, behind the spout like a Western pot	Larger volumes, serving several people, hands used to Western teapots
Uwade kyusu (上手急須)	Top, a loop or bail over the lid	Bigger pots and hotter teas such as hojicha and bancha, where distance from the heat helps
Houhin (宝瓶) and shiboridashi (絞り出し)	No handle at all	Gyokuro and high grade tea at low temperature, where the water is cool enough to hold the body directly

If you are buying one pot and you mostly drink sencha, buy a yokode. The side handle is the reason the kyusu exists, and it is genuinely faster than a rear handle for the short steeps Japanese green tea asks for.

The handleless vessels are a different practice altogether. A houhin has no handle because gyokuro is brewed around 50 to 60 degrees, cool enough that you can cradle the pot in your palm without discomfort. If that sounds appealing, start with the tea first and read our guide to gyokuro before spending on the vessel.

Why the Filter Matters More Than the Clay

This is the part most first-time buyers get wrong. People shop for the clay and the kiln, then discover their beautiful pot pours like a blocked drain. The filter, not the material, determines whether you enjoy using a kyusu day to day.

There are four broad approaches:

• Do-ake, holes drilled straight through the body wall. Simple and traditional, but the holes are large and clog quickly with fine leaf.
• Debeso, a raised half-dome of ceramic with holes through it. More surface area than do-ake, so it resists clogging better, though it can pour slowly.
• Sasame, a broad, gently convex field of very fine ceramic holes worked into the body. Sasame gives you the most filtering surface in ceramic form, and it handles broken leaf far better than do-ake.
• Stainless mesh, a fitted metal screen. The most forgiving option, the easiest to rinse clean, and the safest choice if you are not sure what you will be brewing.

Here is the practical rule. If you drink fukamushi sencha, the deep steamed style, do not buy a coarse ceramic filter. Deep steaming breaks the leaf down into fine particles, and those particles pack into a do-ake filter and stop the pour almost entirely. A fine sasame or a stainless mesh handles it. This single decision will do more for your daily experience than the kiln name on the base.

A note on mesh quality. A cheap metal filter that sits loose in the pot will let leaf escape around its edge, and a flimsy one deforms when you rinse it. Look for a mesh that seats firmly against the inside wall.

Clay, Kiln, and What the Material Actually Does

Tokoname in Aichi Prefecture is the name most bound up with the kyusu. Tokoname ware traces to the end of the Heian period and counts among Japan's six ancient kilns. It was designated a traditional craft on June 2, 1976, with production centered on Tokoname, Handa, and Chita (Japan Traditional Crafts Aoyama Square, retrieved 2026-08-27). The clay is drawn from the Chita peninsula and is high in iron, which is what turns it red in the kiln.

One detail is worth knowing, because it cuts against how these pots are usually marketed. The red shudei tea utensils that people treat as timeless are relatively new to Tokoname. They were produced from the late Edo period into the early Meiji period, against a pottery tradition running back more than nine centuries (Japan Traditional Crafts Aoyama Square). The kiln is ancient. The red teapot is a comparatively recent chapter of it.

Banko ware from Yokkaichi in Mie Prefecture is the other great kyusu name, designated a traditional craft in 1979. Its signature is the shidei or purple clay teapot, also unglazed and high in iron. On the flavor question, the Banko no Sato Center puts it carefully. It says "some studies show that the iron reduces the bitterness of tea by absorbing Tannins in the tea-leaf, and bring out 'Umami' taste" (Banko no Sato Center, retrieved 2026-08-27). That is the honest version of a claim you will see stated far more confidently elsewhere, usually with a precise percentage attached and no source behind it.

Then there is the practical trade-off nobody mentions in the product photos:

• Unglazed clay interacts with the tea and develops a patina with use. It also cannot be scrubbed with soap, and it will carry flavor between very different teas.
• Glazed ceramic, porcelain, and glass are neutral. They give you the same cup on day one and day five hundred, they wash easily, and glass lets you watch the leaf open.

Neither is better. If you drink one style of tea and enjoy a vessel that changes with you, unglazed clay rewards that. If you rotate between sencha, hojicha, and kukicha, a neutral material keeps each one honest.

What Size Kyusu Should You Buy?

Buy for the number of cups you actually pour, and err small. Roughly 200ml to 360ml covers one to two people, which is what most home brewing looks like.

The reason to err small is ratio. Japanese green tea works on a fairly concentrated leaf to water ratio, and a kyusu is meant to be filled and emptied completely. If you buy a 500ml pot and habitually brew 200ml in it, the leaf sits in a shallow puddle, the extraction goes thin and uneven, and you lose the second and third infusions that make good leaf worth the money.

An oversized kyusu also cools faster across a large surface, which quietly drops your brewing temperature below where you meant to be. Small pot, filled properly, poured out completely. That is the pattern.

How Do You Choose Your First Kyusu?

Work through this in order. The first three matter more than the last two.

1. Filter first. Match it to your tea. Fine sasame or stainless mesh if there is any chance you will drink fukamushi. Coarse do-ake only if you know you are brewing whole leaf.
2. Capacity second. 200ml to 360ml for one or two drinkers.
3. Handle comfort third. A yokode should sit in your hand so your thumb rests naturally on top of the lid. That thumb is what holds the lid in place while you pour.
4. Lid fit. The lid should sit level with very little play. A loose lid drips and lets heat escape.
5. Pour test. If you can, pour water through it. A good kyusu cuts off cleanly when you tip it back, rather than dribbling down the spout.

On sourcing trips through Shizuoka and Fukuoka, the tea growers we buy from served us tea from working kyusu, not display pieces. The pots were small, often stained inside, and completely unremarkable to look at. That has stayed with me. The kyusu that improves your tea is the one you use every day, not the one you are slightly afraid to chip.

How to Care for a Kyusu So It Lasts Decades

Care is simple, and it is mostly about what you do not do.

• No soap on unglazed clay. Porous clay absorbs detergent and gives it back to your next cup. Rinse with hot water only.
• No dishwasher. Heat, detergent, and knocking against other items will damage clay pots and can crack a spout.
• Empty the leaf right away. Wet leaf left overnight sours and stains, and it is far harder to remove once dry.
• Dry it open. Rest the lid beside the pot, not on it, so the inside dries fully. Trapped moisture is what causes musty smells.
• Clear the filter. Rinse fine particles out of a mesh or sasame filter after each use. A soft brush helps, and steady buildup is the usual reason an old kyusu pours slowly.

Done this way, an unglazed pot slowly darkens and takes on the character of the tea you brew in it. That patina is the point. It is a record of a few hundred quiet mornings, which is a more meaningful thing to own than a pot that still looks new.

Frequently Asked Questions

Can you use a kyusu for matcha?

No. Matcha is a powder whisked into suspension in a bowl, not steeped and strained. Putting matcha in a kyusu clogs the filter and gives you a thin, gritty cup. Use a chawan and a chasen instead.

Is a kyusu dishwasher safe?

Treat the answer as no. Unglazed clay absorbs detergent and can crack, and even glazed pots risk chipped spouts and lids. Rinse by hand with hot water.

Do I need a kyusu to brew sencha?

No, you can brew good sencha in a mug with a basket infuser. A kyusu improves control over the stop and gives you better second and third infusions, but the leaf quality matters more than the vessel. Our guide to brewing green tea covers the alternatives.

What size kyusu is best for one person?

Around 200ml to 260ml. It fills one generous cup or two small ones and lets you brew multiple infusions without the leaf sitting in too much water.

Why does my kyusu pour so slowly?

Almost always a clogged filter. Fine leaf, particularly from deep steamed sencha, packs into ceramic holes over time. Rinse the filter thoroughly after each use, and consider a finer sasame or a stainless mesh if you drink fukamushi regularly.

How long does a kyusu last?

Indefinitely, if you do not drop it. These are fired ceramics with no moving parts. Well-kept pots stay in families for generations, improving in appearance as they go.

Bringing It Home

A kyusu is a small, honest tool. Choose the filter for the tea you actually drink, keep the pot small enough to fill and empty completely, skip the soap, and it will serve you for decades.

The vessel only ever amplifies what you put in it, so the leaf is where the real difference lives. If you are setting up a kyusu practice, start with a good organic sencha and follow our brewing instructions for the ratio and temperature. Then slow down and pay attention to the cup in front of you. That part is the practice.

Sources

• Japan Traditional Crafts Aoyama Square, "TOKONAME Yaki (Pottery)," kougeihin.jp/en/craft/0407/, retrieved 2026-08-27.
• Banko no Sato Center, "About Banko-yaki," bankonosato.jp/wp/en/aboutbanko/, retrieved 2026-08-27.