Thermometer
A probe or infrared reader for checking water temperature. Its real value is not in daily use but in calibration: measure a few times to learn what your kitchen actually does when boiled water stands for three minutes, then stop measuring and use the clock instead.
Identity
- Category
- Measurement
- Also called
- digital thermometer, probe thermometer, infrared thermometer
- Material
- Stainless steel probe with a digital display, or an infrared sensor
- 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.
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
Time and a jug. Water boiled and left standing falls fast at first and slowly later, and two or three timed trials tell you as much as owning a thermometer does. An infrared reader points at a surface and reads the surface, which in a deep vessel is cooler than the body of the water.
This one is not marked essential. The tea can be made without it.
Brewing methods it is used for
- Low-temperature brewing (gyokuro style) — A great deal of shaded Japanese leaf in a very small volume of water that is deliberately far below boiling — cool enough that the vessel can be held bare-handed. It is the most extreme low-temperature steeping in common practice, and it exists to extract one part of the leaf while leaving another behind.
- Korean green tea brewing — A low-temperature approach to Korean green tea in which the water is cooled through a separate open vessel before it ever meets the leaf, and the pot is emptied entirely into the cups each time. Darye names the etiquette; the brewing approach below is shared by everyday practice outside any formal setting.
- Kyusu brewing (Japanese style) — The Japanese domestic approach to green tea: a moderate quantity of leaf, water well off the boil, short steeps, and two or three infusions from the same leaf with the times adjusted each time.
Tea types it suits
Care and maintenance
Keep the probe dry above the seal. Check it in boiling water occasionally — a drifting thermometer is worse than none because it is believed.
Other measurements
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.
- Thermometer vs temperature-controlled kettle — Measuring the water against controlling it. A thermometer is cheap, tells the truth and does nothing about it; a controlled kettle acts and can be wrong. The most useful thing a thermometer does is calibrate the rest of the kitchen, including the kettle.