Mug infuser basket
A perforated basket that sits inside a mug, holding the leaf while it steeps and lifting out when the tea is ready. The single most common piece of loose-leaf equipment, and the one whose sizing matters most: a basket too small for the leaf to expand is the commonest cause of weak loose-leaf tea.
Identity
- Category
- Filter or infuser
- Also called
- infuser basket, tea infuser, in-mug strainer
- Material
- Stainless steel mesh, or plastic with a fine screen
- Typical capacity
- 50–150 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.
Where it comes from
Modern and international.
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
Leaf loose in the mug and drunk carefully around it — grandpa style — needs no equipment at all and works better than a cramped basket.
This one is marked essential: the methods it belongs to are hard to carry out without it or a close stand-in.
Brewing methods it is used for
- Mug infuser brewing — Loose leaf in a basket inside a mug — the most common way loose tea is actually made, and the method most often responsible for people concluding that loose leaf is not worth the trouble.
Care and maintenance
Rinse immediately; dried leaf in fine mesh is tedious to remove and gradually blocks flow.
Other filter or infusers
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.
- Basket infuser vs strainer vs fill-your-own filter bag — Three ways of keeping leaf out of the cup, and they differ on the one variable that decides how strong the tea gets: how much room the leaf has while it steeps. A confined leaf cannot circulate, and most of its surface never meets water.
- Kyusu vs a basket infuser for Japanese green tea — This is the single most consequential equipment mismatch in everyday tea, and it produces a specific complaint: sencha that tastes thin and simultaneously bitter. The cause is a filter, and no adjustment to time or temperature fixes it.
- Tea ball vs basket infuser — The most widely sold piece of loose-leaf equipment against the one that works. A hinged perforated sphere confines leaf to a volume smaller than the wet leaf needs, and it is the single most reliable cause of the conclusion that loose leaf is not worth the trouble.
- Travel infuser bottle vs a basket in a mug — The same brewing logic in a container that has to survive a bag. The design question is identical to the desk one — can the leaf be separated from the water when the steep is done — and travel bottles answer it in two very different ways.