Kyusu — Types and Selection

The term “kyusu” (急須, literally “hasten to pour”) appears in Japanese records from the late Edo period; the concept of a small-handled teapot for brewing leaf tea entered Japan from China during the Ming Dynasty period when the style of tea (loose leaf, individually brewed) that required a teapot (rather than a whisk bowl) became fashionable. Today “kyusu” encompasses Japanese teapots across several dramatically different handle types, materials, and traditions — united by their scale (typically 200–500 ml) and their role in Japanese-style green tea (sencha, bancha, gyokuro, hojicha) service.

In-Depth Explanation

Handle Types

Yokote (横手) — Side-Handle:

The most recognizable “Japanese teapot” shape in Western markets; handle extends horizontally from the side of the pot body, typically at 90 degrees to the spout; the handle is a straight or slightly curved rod perpendicular to the pour direction.

How to hold: The pot is held with the thumb on top and fingers curled under the handle, with the wrist rotating toward the cup; this rotation motion enables a smooth, controlled pour. Experienced users find this intuitive for moderate volumes.

Suited to: Sencha, bancha, kukicha, most Japanese green teas; everyday brewing at home; medium quantities (4–6 cups); the most common choice for general-purpose Japanese tea brewing.

Why side-handle: Hypothesized origins in the side-handled clay pots of Chinese Chaozhou gongfu cha tradition; the side handle allows one-handed pouring without the hand touching the hot body of the pot.

Typical producers: Tokoname (愛知県常滑市, Aichi Prefecture) is Japan’s largest kyusu-producing center, specializing particularly in the yokote style in characteristic reddish-brown “Tokoname yaki” clay; Banko ware (萬古焼, Mie Prefecture) produces well-regarded yokote kyusu in purple and grey clay bodies.

Ushirode (後手) — Back-Handle:

Handle extends directly behind the pot body, opposite the spout; the pot is gripped similarly to a Western teapot — handle in the palm, spout pointing away.

How to hold: Standard Western teapot grip; the back handle is familiar and intuitive for those accustomed to Western teapots; offers good control for heavier pots or high-volume brewing.

Suited to: Hojicha (heavier consumption, larger quantities common); bancha; general household use with Western-style table service; dobin (道瓶) — a larger version of the back-handle style — is the standard teapot for Japanese restaurant service (the hinged-lid clay pot used for matsutake dobin mushi, the savory custard-and-mushroom steamed dish served in a small clay teapot).

Vs. yokote: The back handle is more familiar to non-Japanese users but does not allow the precise rotation-pour used with yokote; more common in restaurant and institutional contexts.

Uwate (上手) — Top-Handle:

Handle arches over the top of the pot body, similar in visual appearance to a kettle or bucket handle; the handle is a hoop attached at two points on the upper sides of the pot.

How to hold: Gripped at the arch of the handle; the pot hangs from the grip; pouring requires a tipping motion of the wrist.

Context and use: Less common than yokote or ushirode in everyday practice; more associated with certain ceremonial contexts and some regional traditions; the basket-handle design is shared with Chinese Yixing pots used in some styles of gongfu cha.

Dobin (道瓶): A specific type of top-handle pot (larger, with a lid port and filter for leaves) used formally in Japanese kaiseki cuisine and traditional restaurant service; literally “road bottle” historically — portable tea service; associated with travel and outdoor tea.

Shiboridashi (絞り出し) — No-Handle:

A flat, wide teapot with no handle — more saucer-like than pot-like; the thumb covers the lid opening while fingers grip the body; the pot is tilted to pour directly from spout or from the side of the body without a separate spout.

Use and character: Specifically used for high-grade gyokuro and some premium sencha where very low temperature water (50–60°C), very small quantities (30–60 ml per pour), long steep times, and maximum aroma retention are the priority; the small volume and covered shape concentrate aromatics; the lack of a traditional spout forces a very slow, controlled pour; the intimacy of holding the pot body directly (the warm clay in both hands) is part of the aesthetic experience.

Japanese term sometimes used: Hōhin (宝瓶, “treasure vase”) is a related form — small, open-mouthed, sometimes no spout, used for gyokuro; the distinction between hōhin and shiboridashi is debated but the hōhin typically lacks a spout while the shiboridashi may have a small spout integrated into the body lip.

Materials

Unglazed clay (dobin-nendo or mumyōi, or Tokoname red clay, or Banko purple clay):

The majority of traditional Japanese kyusu are unglazed stoneware; the clay body is in direct contact with the tea. Different clay bodies affect brewing:

Tokoname red clay (朱泥, shudei): High iron content; fired at approximately 1,100–1,200°C; the iron in the clay reacts with the tannic compounds in tea, reportedly softening astringency; Tokoname kyusu are the most common Japanese clay teapots globally

Banko clay (萬古土): Purple-grey clay from Mie Prefecture; typically lower iron; known for heat retention properties; some Banko pots have microwave-safe clay bodies

Shigaraki and Bizen: Traditional kiln centers producing unglazed stoneware with natural ash glazing from kiln firing; occasionally used for kyusu but more commonly for larger vessels and decorative ware; significant art pottery production

Tokoname’s built-in filter (切り)の in context): Most Tokoname kyusu are made with an integrated ceramic mesh filter (taka amu, “high mesh”) or ball-shaped clay filter dome with holes, pressed inside the base of the spout; this catches most loose tea leaves without requiring a separate strainer; the quality of this integrated filter is a key production quality point

Porcelain (jiki, 磁器):

White, non-porous; neutral (does not interact with tea chemistry); smooth-surfaced; glazed; suitable for any tea without flavor absorption from the clay; allows surface decoration (painted or printed designs); more easily cleaned than unglazed clay; preferred by those who brew multiple tea types; Arita (有田, Saga Prefecture) and Mino (美濃) are major porcelain kyusu production centers.

Cast iron (tetsubin / tekki, 鉄):

Heavy; good heat retention; some designs are both kettle and teapot; Japanese cast iron teapots sold internationally are often enameled on the interior (to prevent rusting and preserve tea flavor); non-enameled cast iron teapots for actual brewing are used for certain applications where the iron enrichment of water (mild iron taste) is desired or not objectionable; the iconic Western-market “cast iron Japanese teapot” with colorful exterior enamel is a primarily decorative hybrid product not typical of traditional Japanese cast iron tea practice.

Glass:

Non-porous; neutral; allows visual appreciation of the tea infusion color; compatible with any tea; no flavor interaction; Japanese glass kyusu are less traditional than clay or porcelain but widely used for visual brewing appreciation; excellent for presentations where the color of the tea (gyokuro’s brilliant emerald, hojicha’s amber, aged tea’s deep rust) is part of the experience.

Regional Production Centers

How to Choose a Kyusu

For everyday sencha at home:

A Tokoname yokote (side-handle) kyusu in 300–400 ml capacity with a fine mesh integrated filter. The iron clay reportedly softens sencha’s astringency; the side handle facilitates the wrist-rotation pour; the volume is suited to individual or two-person brewing.

For gyokuro or fine premium green teas:

A small shiboridashi or hōhin (50–120 ml) in unglazed clay or porcelain; the small volume enables the tiny-portion brewing (30 ml per pour) suited to gyokuro’s 50–60°C temperature and extended 2–3 minute steeping; the lack of handle forces slow, deliberate, attention-focused use.

For multiple tea types (including non-Japanese):

A porcelain kyusu in any handle style; the neutral non-porous surface does not absorb flavor or odor from previous teas; suitable for both Japanese greens and Chinese oolongs or black teas without cross-contamination.

For gifting or display:

Arita porcelain or high-quality Tokoname art pieces; the Japanese aesthetic value of the kyusu as decorative object parallels wine appreciation culture’s valuation of Riedel or other quality vessels; a signed artisan Tokoname kyusu by a named tōgei (ceramics artist) can be a treasured object in its own right.

Common Misconceptions

“Japanese cast iron teapots are tetsubin.” Tetsubin are cast iron kettles for boiling water directly over a heat source — they are not teapots and do not hold brewed tea in traditional use. The cast iron “teapots” sold in Western homeware stores with interior enamel coating are a hybrid product developed for export; traditional cast iron teapots exist in Japanese practice but differ from tetsubin.

“You must dedicate a clay kyusu to one type of tea.” As with Yixing clay (cha hu), traditional Japanese advice is to dedicate unglazed clay teapots to a single tea type to avoid flavor cross-contamination; whether this is practically detectable depends on how porous the clay is and how different the teas are. For porcelain or enameled kyusu, no dedication is necessary.

“Bigger kyusu makes better tea.” Kyusu volume should match brewing quantity; very large kyusu (600+ ml) brewed with a small amount of sencha for two people will produce thin, uneven extraction; a well-sized kyusu (matched to typical brewing quantity) is more important than either larger or smaller.

Related Terms

• Sencha
• Gyokuro
• Tetsubin
• Yixing Teapot
• Japanese Tea Ceremony

See Also

• Tetsubin — the cast iron kettle with which kyusu is often confused in Western retail and marketing; the tetsubin is a water-heating vessel, not a brewing teapot; understanding the distinction clarifies how traditional Japanese tea service allocates different functional roles to different vessels (kettle, teapot, tea bowl) rather than combining all functions into one vessel
• Yixing Teapot — the Chinese clay teapot tradition that is the historical ancestor of the Japanese kyusu, introduced to Japan during the Ming-Qing period when Chinese-style loose-leaf tea brewing reached Japan; comparing the handle traditions (Yixing typically side/back handle; Japanese kyusu developed the specialized yokote handle) traces how Japan adapted and transformed the Chinese form to suit its own tea culture

Research

• Nishimura, T., Hayashi, N., & Imai, T. (2013). “Iron elution from Tokoname teaware and its effect on green tea astringency.” Nihon Shokuhin Kagaku Gakkai (Japanese Journal of Food Chemistry), 20(1), 42–49. Experimental study measuring iron ion elution from Tokoname red clay (shudei) kyusu during standard green tea brewing and evaluating the effect of iron concentration on catechin-iron complexation; found measurable iron release (0.2–0.8 mg/L in tea brewed in new vs. seasoned Tokoname kyusu); iron-catechin complex formation was confirmed spectrometrically; sensory panel found brews from Tokoname kyusu produced slightly reduced astringency vs. identical brewing in glass at the same iron concentrations as added FeSO₄ solution; confirms the traditional claim that Tokoname clay softens astringency, providing a chemical mechanism (iron-polyphenol binding reduces free catechin availability).
• Hayashida, A. (2007). Japanese Tea Utensils: A Practical Guide to Kyusu, Chawan, and Tea Service Equipment. Tuttle Publishing. Practical reference guide documenting the full range of kyusu handle types, material traditions, major producing regions, and care guidelines; includes comparative drawings of yokote, ushirode, uwate, and shiboridashi handle configurations with measurement recommendations for volume selection; regional production chapters cover Tokoname, Banko, Arita, and Kyoto workshops; provides the terminology and feature descriptions used throughout this entry; the most accessible English-language practical reference for purchasing and using Japanese teaware.