Enamel-lined cast iron teapot
A cast iron pot with a glassy enamel lining, made for steeping tea at the table. It is constantly confused with a tetsubin, and the confusion matters in a practical way: this vessel must never go on a heat source, and a tetsubin is made for exactly that.
Identity
- Category
- Brewing vessel
- Native name
- 鉄急須
- Romanised
- tetsukyusu
- Also called
- cast iron teapot, iron tea kettle (misnomer)
- Material
- Cast iron with a vitreous enamel interior lining
- Typical capacity
- 300–800 ml
- Skill level
- Beginner
Porosity
Not porous. It contributes nothing of its own to the liquor, so it can be moved between teas freely and washed with detergent without consequence.
The enamel lining is inert, so nothing carries over between teas and nothing seasons. Any claim that a lined pot’s iron affects the flavour of the tea describes a tetsubin, not this.
Where it comes from
Japanese in derivation, and the form most exported. The lining is a modern adaptation of an older unlined kettle.
Named here rather than presented as generic equipment. The object belongs to a practice, and TeaHQ describes it from the outside.
If you do not own one
A glazed stoneware pot holds heat almost as well, weighs a fraction as much and costs less. The iron pot’s real advantage is thermal mass on a table over a long sitting.
This one is not marked essential. The tea can be made without it.
Brewing methods it is used for
- Western brewing (teapot or mug) — A small amount of leaf in a large volume of water, steeped once for a few minutes and then strained off. The approach most English-speaking drinkers already know, and the one most teas sold in the West are made for.
Tea types it suits
Care and maintenance
Rinse and dry immediately, including the exterior. Chips in the enamel expose bare iron, which then rusts. Never put it on a hob or a flame — the lining is not made to be heated dry or directly.
Other brewing vessels
- Berrad (Maghrebi teapot)
- Boiling teapot
- Brewing saucepan
- Çaydanlık (Turkish double kettle)
- Chawan (matcha bowl)
- Chinese lidded mug
- Cold brew bottle
- Dagwan (Korean teapot)
- Dobin
- Gaiwan
- Glass teapot
- Glazed stoneware teapot
- Houhin
- Kyusu
- Nixing pottery teapot
- Plastic teaware
- Plunger tea press
- Porcelain teapot
- Quick-brew infuser press
- Ru-glaze crackle ware
- Shiboridashi
- Silver teapot
- Stainless steel teapot
- Travel gongfu set
- Travel infuser bottle
- Unglazed clay teapot (non-Yixing)
- Western teapot
- Yixing teapot
- Zavarnik (concentrate pot)
Sources
This page is TeaHQ synthesis. No external source stands behind the description, the material or the account of how the object is cared for. Where the record names a tradition, that attribution is TeaHQ’s own reading of common practice rather than a citation.
TeaHQ names no maker, brand or shop and has nothing to sell. Nothing on this page should be read as advice to buy the object — the substitute note above exists because owning it is usually optional.
Written comparisons
Where TeaHQ has set this piece of teaware against something it is routinely confused with, and argued the differences out in full.
- Tetsubin vs enamel-lined iron teapot — The most consequential teaware confusion in the export market, because getting it wrong destroys the object. A tetsubin is an unlined iron kettle for boiling water; the lined pot sold alongside it is a teapot that must never go on a heat source.