Methodology

How we test tea infusers

Every product on this site is measured, photographed and inspected before it goes up. Here is exactly what that involves, step by step.

Four white mugs in a row, each with a steel infuser basket, the tea in each at a different strength, beside a sand timer and a kitchen scale

Our criteria

  1. We measure, we do not estimate. Dimensions on this site come from dimensioned drawings for each product, and cup yields are calculated from stated capacities at 8 fl oz per cup. Where a figure has not been published — the footprint of the 1000 ml (34 fl oz) teapot, for instance — we say so on the page instead of scaling a number off a photograph.
  2. We check the mesh against the hardest tea. Whole leaf passes through nothing, so it proves nothing. The teas that expose a coarse mesh are rooibos, which is almost entirely fine needles, and broken-grade black tea, which carries dust. Those are the two we judge filtration by, because they are also two of the most widely drunk categories.
  3. We check fit on real cups. A mug infuser is useless if it does not sit on the mug you own. We measure the basket across its rim and state the minimum cup opening it needs, rather than saying it fits most mugs and leaving you to find out. The figures are on the mug infuser page.
  4. We read the buyer feedback, all of it. Ratings and quotes on this site come from verified buyers of these products. What buyers report is what decides which formats we stock.
  5. We look at every photograph before it is published. Every image on this site is opened at full resolution before it goes up. It is slow and there is no substitute for it.

Who does this

Elena Marsh, who runs Teabrim. She measures equipment and brews a great deal of tea in it, which is the expertise that matters when you are choosing an infuser. Every order carries a 30-day money-back guarantee, so the risk is on us, not you.

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