Independent buying guides for home tea brewing

Loose-Leaf Tea Glossary: 24 Terms Explained

The words that show up in loose-leaf tea specs, reviews and how-to guides, explained without jargon. Open any term for the full explanation and what to look for when buying.

Black tea
Fully oxidized tea leaves that brew a dark, robust cup, forming the base of many everyday and flavored blends.
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Chasen
A bamboo whisk carved with many fine tines, used to whisk matcha powder and hot water into a smooth, frothy cup.
Read more about chasenRelated: Best Matcha Whisks: Bamboo Chasen and Modern Picks
Cold brew tea
Tea steeped in cold or room-temperature water for several hours, producing a smoother cup with less bitterness.
Read more about cold brew teaRelated: Best Cold Brew Tea Makers
Descaling
Cleaning mineral buildup, or limescale, out of a kettle using a mild acid solution such as vinegar or citric acid.
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Gaiwan
A lidded bowl, usually porcelain, used to steep and pour tea without a handle, central to gongfu brewing.
Read more about gaiwanRelated: Best Gaiwans
Gongfu brewing
A Chinese brewing style that uses a lot of leaf in a small pot or gaiwan for many short, concentrated infusions.
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Gooseneck kettle
A kettle with a long, curved spout that gives precise control over the speed and placement of a water pour.
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Green tea
Minimally oxidized tea that keeps a fresh, grassy or vegetal character and needs cooler water than black tea.
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Hard water
Water with a high mineral content that can dull tea flavor and speed up scale buildup inside a kettle.
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Infuser
A removable basket, ball or filter that holds loose leaves in water while letting flavor and expanded leaves move freely.
Read more about infuserRelated: Best Tea Infusers
Matcha
Finely ground, shade-grown green tea that is whisked directly into hot water rather than steeped and strained.
Read more about matchaRelated: Best Matcha Powder: Ceremonial and Culinary Grades Compared
Oolong
A tea style between green and black, partially oxidized to a degree the tea maker controls during processing.
Read more about oolongRelated: Best Oolong Tea: Light to Dark Styles Compared
Oxidation
The natural chemical browning of picked tea leaves when exposed to air, which shifts flavor from green toward black.
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Pu-erh
A fermented, often aged tea from Yunnan, China, known for earthy, mellow flavor that can change over years of storage.
Read more about pu-erhRelated: Best Pu-erh Tea: Ripe and Raw Styles Explained
Re-steeping
Brewing the same tea leaves again for a second, third or further infusion, common with whole leaf and gongfu teas.
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Rooibos
A naturally caffeine-free herbal tisane from South Africa, made from the rooibos bush rather than the tea plant.
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Steeping time
How long tea leaves sit in hot water before straining, the main factor that turns a cup delicate or bitter.
Read more about steeping timeRelated: Best Tea Timers
Tea-to-water ratio
The proportion of dry tea leaves to water volume, the main lever for strength alongside steeping time.
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Tisane
An herbal infusion, such as chamomile, peppermint or rooibos, made from plants other than the tea shrub itself.
Read more about tisaneRelated: Best Herbal Tea: Caffeine-Free Blends Compared
Water temperature
The heat of the water used to brew, which must match the tea style or the cup turns bitter, flat or scalded.
Read more about water temperatureRelated: Best Variable Temperature Kettles
Western brewing
The common approach of steeping a modest amount of leaf once in a full teapot or mug for several minutes.
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White tea
The least processed tea style, made from young buds and leaves with minimal oxidation and no rolling or firing.
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Whole leaf tea
Loose tea made of intact or lightly broken leaves, as opposed to the fine dust and fannings used in most tea bags.
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Yixing teapot
An unglazed clay teapot from Yixing, China, traditionally seasoned and dedicated to one type of tea over time.
Read more about yixing teapotRelated: Best Yixing Clay Teapots