Best Japanese Teapot (Kyusu) 2026: 6 Picks for Green Tea
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If you love Japanese green tea, the teapot you brew it in matters more than you might expect. A kyusu — the small, side-handled Japanese teapot — is built for exactly how sencha, gyokuro, and hojicha are meant to be brewed: small batches, short steeps, poured out completely, then steeped again. We researched the current options across clay, cast iron, and glass to find the pots most worth your money, and this guide compares them side by side.
Table of Contents
- Kyusu vs. Tetsubin vs. Tetsu Kyusu: Clearing Up the Names
- Clay vs. Cast Iron vs. Glass: Which Material Is Right for You?
- The 6 Best Japanese Teapots at a Glance
- How to Choose a Japanese Teapot
- The 6 Best Japanese Teapots, Ranked
- How to Brew Green Tea in a Kyusu
- Caring for Your Teapot
- FAQ
Kyusu vs. Tetsubin vs. Tetsu Kyusu: Clearing Up the Names
Shopping for a Japanese teapot gets confusing fast, because three different vessels all get sold under similar names:
- Kyusu (急須) — a teapot for brewing tea. Usually clay or porcelain, most often with a side handle. You pour hot water in, steep the leaves, and pour the tea out. This is the everyday workhorse of Japanese green tea.
- Tetsubin (鉄瓶) — a cast-iron kettle for boiling water, not brewing tea. Traditional tetsubin have an uncoated interior and no strainer. You boil water in it, then pour that water into your kyusu.
- Tetsu kyusu (鉄急須) — a cast-iron teapot for brewing tea. These have an enamel-coated interior and usually include a removable strainer. They are not meant for boiling water over a flame — the enamel can be damaged by direct heat.
When a listing says “Japanese cast iron teapot,” it almost always means a tetsu kyusu. When it says “tetsubin,” check whether the interior is enamel-coated (brewing pot) or bare iron (water kettle) before you buy. Our picks below include true clay kyusu, glass kyusu-style pots, and enamel-lined cast-iron brewing pots — all vessels you steep tea in.
Clay vs. Cast Iron vs. Glass: Which Material Is Right for You?
Tokoname clay
Tokoname-yaki comes from Aichi Prefecture, one of Japan’s six ancient kiln traditions. Its red shudei clay is high in iron, and that iron reacts with tannins in green tea, softening astringency and rounding out the cup. Tokoname kyusu are usually unglazed inside, so the porous clay gradually builds up a seasoned patina that many tea drinkers consider a feature, not a flaw. If you mostly drink everyday sencha, Tokoname is the most practical clay to start with.
Banko clay
Banko-yaki comes from Yokkaichi in Mie Prefecture. Its iron-rich purple (shidei) or yellow clay is known for excellent heat retention, and Banko pots are often reduction-fired. The practical reputation of Banko clay is that it enhances umami — the savory depth that makes gyokuro, kabusecha, and high-grade sencha special. If umami-forward teas are your focus, Banko is the clay worth seeking out.
Cast iron (enamel-lined)
Cast-iron brewing pots hold heat far longer than clay or glass, which makes them great for long sessions, for serving several people, and for teas served hot like hojicha and bancha. The enamel interior keeps the pot from rusting and keeps the flavor neutral, like glass. The trade-offs are weight — a cast-iron pot is several times heavier than a clay kyusu — and care: never heat an enamel-lined pot over a flame, and dry it thoroughly after washing.
Glass
Glass kyusu-style pots are neutral, easy to clean, and let you watch the leaves unfurl and the color develop. They do not season or alter flavor the way unglazed clay does, which makes them the most versatile choice if you brew many different teas in one pot. The trade-off is heat: glass cools faster than clay or iron, so it suits quick steeps rather than long lingering sessions.
The short version: choose Tokoname clay for everyday sencha, Banko clay for umami-rich gyokuro and premium sencha, cast iron for heat retention and hosting, and glass if you want one neutral pot for everything.
The 6 Best Japanese Teapots at a Glance
| Pick | Material | Capacity | Best for |
|---|---|---|---|
| 1. Yamakiikai Isshin Tokoname Kyusu | Tokoname clay | 11.5 fl oz (350 ml) | Best overall clay kyusu |
| 2. KIMIKURA Tokoname Kyusu | Tokoname clay | 14.2 fl oz (420 ml) | Best larger clay kyusu |
| 3. Banko-yaki Kyusu, Shidei Purple Clay | Banko clay | 12.3 fl oz (365 ml) | Best for gyokuro & umami |
| 4. Hario ChaCha Kyusu Maru | Heatproof glass | 700 ml (23.7 fl oz) | Best glass / most versatile |
| 5. Suyika Tetsubin Cast Iron Teapot | Cast iron, enamel interior | 22 oz (650 ml) | Best budget cast iron |
| 6. TOPTIER Cast Iron Teapot, Diamond Design | Cast iron, enamel interior | 30 oz (900 ml) | Best large cast iron |
How to Choose a Japanese Teapot
Size. A kyusu is deliberately small. Most hold 250–420 ml, enough for two to three small cups. That is by design: Japanese green tea is brewed concentrated and re-steeped, not made by the liter. If you regularly serve four or more people, look at the larger glass or cast-iron options instead — or brew two rounds.
Strainer. The strainer decides how clean your cup is. Fine stainless mesh handles fukamushi (deep-steamed) sencha, whose small leaf particles clog coarser filters. Built-in ceramic strainers (cera-mesh) are traditional and work well for standard sencha. Removable basket strainers are the easiest to clean.
Handle. The classic kyusu has a side handle (yokode), which gives precise one-handed pouring control — you can pour in short rocking bursts to distribute the tea evenly. Rear-handle (ushirode) pots feel more like Western teapots and suit larger sizes. Top-handle (uwade) pots are usually the biggest, for groups and bancha.
Weight and care. Clay is light and low-maintenance beyond “rinse, no soap, air-dry.” Cast iron is heavy and needs thorough drying to protect the enamel and prevent rust at uncoated edges. Glass is the lowest-maintenance of all but the most fragile.
One pot per tea type? If you buy an unglazed clay kyusu, many tea drinkers dedicate it to one tea family — sencha in one pot, gyokuro in another — because the seasoning builds up over time. With glazed, enamel-lined, or glass pots, one pot can brew everything. If you are buying your first kyusu, do not overthink this: start with one pot and see which teas you reach for most.
The 6 Best Japanese Teapots, Ranked
1. Yamakiikai Isshin Tokoname Kyusu — Best Overall Clay Kyusu
Our top pick is a classic done right: a Tokoname clay kyusu from the Isshin Kiln, made in Japan by Yamakiikai. At 11.5 fl oz (350 ml), it is the right size for two generous cups or three small ones, and its super-fine stainless strainer handles everything from asamushi to fukamushi sencha. The black earthenware body is unglazed in the traditional way, so it will season with use and smooth out astringency over time.
Why it ranks first: it pairs authentic Tokoname clay — the most practical clay for everyday green tea — with a fine-mesh strainer and a size that fits daily brewing. If you are buying your first kyusu, start here.
2. KIMIKURA Tokoname Kyusu (Black, 420 ml) — Best Larger Clay Kyusu
If the pick above feels a touch small, this KIMIKURA Tokoname kyusu steps up to 420 ml (14.2 fl oz), enough for tea for two to three in standard cups. It is also Tokoname yaki, with a band-like fine mesh lining the inside of the pot, so even the tiny leaf particles in fukamushi sencha stay out of your cup. The black finish is understated and pairs with just about any cups you already own.
Why it ranks here: same Tokoname clay benefits, more room per steep, and a fine mesh filter designed specifically for deep-steamed teas. A strong choice if you share your tea or like a bigger cup.
3. Banko-yaki Kyusu, Shidei Purple Clay — Best for Gyokuro & Umami
For umami-forward teas, we researched this Banko-yaki kyusu in shidei purple clay with a white brush-line pattern. At 12.3 fl oz, it is a personal-to-two-person pot, and its Banko clay and reduction firing are the combination associated with bringing out savory depth in gyokuro, kabusecha, and high-grade sencha. The brush-line decoration makes it the most visually distinctive clay pot in this roundup, too.
Why it ranks here: if gyokuro is your tea, the clay matters, and Banko is the clay to try. Pair it with low-temperature brewing — gyokuro shines around 50–60°C (122–140°F) — and a temperature-control kettle helps enormously. See our guide to the best gooseneck kettle for options that hold those temperatures.
4. Hario ChaCha Kyusu Maru (700 ml) — Best Glass / Most Versatile
Hario’s ChaCha Kyusu Maru is the glass pot to buy if you want one teapot that brews everything. The 700 ml heatproof-glass body gives leaves plenty of room to expand, the large stainless strainer lifts out for easy cleaning, and the glass is dishwasher safe. Because glass is neutral, this is the pot to reach for when you are rotating through sencha, hojicha, genmaicha, and herbal teas in the same week — no seasoning, no flavor carryover.
Why it ranks here: versatility and ease. It is the best choice for households that brew many teas, for beginners who do not want to fuss over clay care, and for anyone who likes watching the brew develop.
5. Suyika Tetsubin Cast Iron Teapot (22 oz) — Best Budget Cast Iron
The Suyika tetsubin-style teapot is the most affordable way into cast iron. It holds 22 oz (650 ml) at full capacity — about 18 oz of practical brewing capacity — with a stainless steel infuser and a fully enameled interior that keeps the flavor neutral and the pot easy to care for. The listing describes it as usable on the stovetop on a small flame, but read the current listing’s care instructions carefully before applying any direct heat, since enamel and high heat do not mix.
Why it ranks here: genuine cast-iron heat retention at a budget price, sized for one to two people. A good first cast-iron pot.
6. TOPTIER Cast Iron Teapot, Diamond Design (30 oz) — Best Large Cast Iron
When you are brewing for a table, the TOPTIER Diamond Design teapot’s 30 oz (900 ml) capacity is the one to reach for. It is cast iron with an enameled interior and a removable stainless infuser, and the diamond-pattern body in dark green is handsome enough to serve from. Like all enamel-lined iron pots, it is a brewing and serving vessel — heat your water in a kettle, then pour it in.
Why it ranks here: the largest capacity in this roundup, with the heat retention that makes cast iron worth its weight. Best for hosting and for long, slow tea sessions.
How to Brew Green Tea in a Kyusu
These are the same fundamentals behind our sencha brewing guide, adapted for a kyusu:
- Warm the pot. Fill the kyusu with hot water, swirl, and discard. This preheats the clay or iron so the brewing water does not lose heat on contact.
- Add tea. Use about 4–5 g of loose leaf (roughly 1 tablespoon) for a 250–350 ml pot. For gyokuro, use more leaf and less water.
- Add water at the right temperature. Sencha: 70–80°C (158–176°F). Gyokuro: 50–60°C (122–140°F). Hojicha and genmaicha: 90–95°C (194–203°F). A gooseneck kettle with temperature control makes this far easier — see our gooseneck kettle picks.
- Steep. Sencha: 60–90 seconds. Gyokuro: 90–120 seconds. Fukamushi sencha: 30–45 seconds.
- Pour it all out. Pour every last drop into cups, alternating between cups in short pours so everyone gets the same strength. Leaving water in the pot over-extracts the leaves and turns the next cup bitter.
- Re-steep. Add slightly hotter water and steep a little longer for the second infusion; good sencha gives two to three infusions, and quality gyokuro can give more.
One thing a kyusu is not for: matcha. Matcha is whisked in a bowl, never steeped in a teapot. If you want to get into matcha, start with our how to make matcha guide.
Caring for Your Teapot
- Unglazed clay (Tokoname, Banko): rinse with hot water only — never soap or detergent, which strips the seasoned surface and can leave flavors behind. Turn the pot upside down to dry completely. Do not put it in the dishwasher.
- Enameled cast iron: rinse with warm water, dry thoroughly with a soft cloth while still warm, and store with the lid off so moisture can escape. Never heat an enamel-lined pot over a flame or put it in the microwave or dishwasher.
- Glass: rinse after use; the Hario pot is dishwasher safe, but hand-washing keeps the glass clearer longer. Avoid abrasive scrubbers on any of these pots.
- Strainers: if a fine mesh strainer clogs, soak it in hot water and brush gently with a soft brush. Do not poke at it with anything sharp.
FAQ
What is the best Japanese teapot for beginners?
A Tokoname clay kyusu around 300–350 ml, like the Yamakiikai Isshin pick above, is the best starting point for green tea drinkers. If you would rather have one pot for every tea type, the Hario ChaCha Kyusu Maru glass pot is the most forgiving choice.
What is the difference between a kyusu and a tetsubin?
A kyusu is a teapot for brewing tea; a tetsubin is a cast-iron kettle for boiling water. A tetsu kyusu is a cast-iron teapot for brewing tea, with an enamel interior and a strainer. Check the interior before buying: enamel means brewing pot, bare iron means water kettle.
Can I put a Japanese teapot on the stove?
Clay kyusu: no — heat water separately and pour it in. Enameled cast-iron brewing pots: generally no direct heat either; the enamel can be damaged. Some cast-iron listings claim stovetop safety, but always follow that specific model’s care instructions. A bare-iron tetsubin kettle is the only vessel in this family designed to boil water over heat.
What size kyusu should I buy?
For one to two people, 250–350 ml is ideal. For three to four people, look at 400–700 ml. Remember that Japanese green tea is brewed concentrated and re-steeped, so a small pot is not a limitation — it is the point.
Does the clay really change the flavor?
The clay traditions say yes, and the mechanism is plausible: Tokoname’s iron-rich clay interacts with tannins to soften astringency, while Banko clay is prized for emphasizing umami. The effect is subtle, not dramatic — good leaf and correct water temperature matter far more. Think of clay as the final few percent, not the foundation.
Can I brew matcha in a kyusu?
No. Matcha is a powdered tea whisked with water in a bowl (chawan), not steeped in a pot. A kyusu is for loose-leaf teas like sencha, gyokuro, hojicha, and genmaicha.
The Bottom Line
If you drink Japanese green tea regularly, a kyusu is one of the highest-value upgrades in tea — small, affordable, and genuinely better suited to the job than a Western teapot. Start with Tokoname clay for everyday sencha, Banko clay for gyokuro, glass for versatility, or cast iron for heat and hosting. Whichever you choose, the ritual is the same: small pot, fresh leaf, right temperature, pour it all out, steep again.
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