Advice on tea usually concerns which leaf to buy. Storage receives less attention and frequently makes more difference — particularly if you buy in quantity to reduce cost.
What degrades tea
Four things, in roughly this order of importance:
Oxygen. Oxidation continues after processing. This is why a half-empty container ages faster than a full one.
Light. Degrades the aromatic compounds that distinguish a good tea from a dull one.
Heat. Accelerates everything else.
Moisture and odour. Tea leaves are absorbent by nature. Stored near coffee or spices, they take on both.
What this means practically
Opaque and airtight, not glass on a shelf. A tin excludes light entirely. Attractive glass jars in daylight are the most common storage mistake.
Not above the kettle or stove. The convenient spot is the warm one.
Not in the fridge. Condensation on removal introduces moisture, and the fridge is full of odours.
Decant from bulk. If you buy larger quantities for value, keep the main stock sealed and work from a small container. Every opening of the main container exchanges air.
Why this matters more with loose leaf
Whole leaves have more surface area exposed to air than compressed dust in a sealed bag — the trade-off for the better cup. Buying good loose leaf and storing it badly gives up much of what you paid for.
Loose leaf also has a packaging advantage worth noting: a tin or pouch involves two components against the eight or more in a boxed teabag — carton, inks, liner, sachet, bag material, seal, string and tag.
That matters under the EU Packaging and Packaging Waste Regulation, enforceable since 12 August 2026, which requires substances of concern in packaging materials and components to be minimised.
How long tea keeps
Properly stored, most teas hold up for a year or more, though green teas fade faster than black. Tea does not spoil in the way food does; it simply flattens.
The practical test is smell. Dry leaf that smells of little will not brew into much.
If you are choosing where to spend, correct storage of a mid-grade tea beats careless storage of a premium one — and it costs the price of a tin.