Does chai patti expire? Shelf life and how to store tea

Loose leaf tea how to store, in one line: airtight, dark, cool and dry. Dry tea leaf holds almost no water, so mould has nothing to grow in, and the leaf does not go off the way cooked food does. What it does is go flat: the volatile oils that carry the aroma escape slowly, and a brew made from old, badly kept leaves tastes thin and smells of little. The same leaf left open, damp or in the sun goes flat in weeks instead of months.

The rules follow from that. Keep the leaf in a tin or jar with a tight lid, in a cupboard away from the stove and the window, and dip it only with a dry spoon. Tea also soaks up the smells around it, so it belongs far from the masala dabba, the onion basket and anything strongly scented. COWBERRY's CTC tea is sealed in air-tight packaging right after processing to hold its flavour and aroma, and once the pack is open the same care is yours.

1. Pick an airtight container. A steel or tin dabba with a snug lid, or a glass jar with a rubber seal. Clear glass lets light through, so a glass jar only works inside a dark cupboard.
2. Find the right shelf. A cool, dry cupboard away from the stove, the kettle and the window. Heat dries out the leaf's oils, and daylight fades them.
3. Dip only with a dry spoon. Steam from the boiling kettle is enough to damp the surface of the leaves, and a damp spoon brings that moisture into the whole jar.
4. Reseal at once. Spoon out what the pot needs and close the tin before the chai boils. A pack left open during the morning ritual loses its edge within weeks.
5. Keep strong smells away. Tea takes up the odours around it, so store it apart from masalas, onion, coffee and soap-scented shelves.
6. Buy packs you can finish. A small pack that ends in a month or two brews fresher than a kilo tin opened and half-forgotten. COWBERRY's CTC tea comes in 500 g and 1 kg packs, the orthodox in a 100 g pack, so you can pick the size your kitchen finishes quickly.

• The wet spoon. Steam condenses on a cold spoon, and one damp dip can clump the surface leaves and start a stale smell.
• The glass jar on the windowsill. Light fades the leaf and bleaches the colour of the brew, even when the jar is shut.
• The shelf above the stove. Heat and rising steam are the quickest way to a flat, lifeless cup.
• Next to the masala dabba. A few weeks beside jeera or hing and the tea brews with their ghost in it.
• The fridge. It is not needed for dry tea, and fridge air is damp and full of food smells; dry leaf is better off in the cupboard.
• Topping up the same jar. Old leaves drag down the fresh ones. Finish a jar, wash and dry it, then open the new pack into it.

Does loose leaf tea expire? Not in the way people fear: kept in an airtight container away from light, heat and moisture, dry tea leaf is fine for about a year, and the change is gradual. The table sets out the times that matter in an Indian kitchen.

Tea gone flat is easy to read: the dry leaf smells faint instead of malty, the brew comes out pale and thin, and the cup tastes dusty or of hot water. Mould is the one real spoilage, and it only happens when moisture reached the leaf, so a mouldy or clumped batch means the container failed somewhere. The airtight pack is the first defence: COWBERRY's CTC black tea is sealed air-tight straight after processing, and the same discipline at home keeps it that way.

Caffeine. The NHS lists about 75 mg of caffeine in a cup of tea, for black or green tea alike, so a cup from the stored leaf is moderately caffeinated. The full picture, cup by cup, is on does CTC tea have caffeine.

Timing with meals. Tea binds the iron in food and makes it unavailable, so the Dietary Guidelines for Indians advise leaving it out before, during or soon after a meal. The trial evidence puts the gap at one hour: when twelve healthy UK women drank tea a full hour after an iron-containing meal, the drink's blocking effect on iron absorption was about half as strong. So brew the well-kept leaf, but keep that hour between it and dal, leafy greens and iron-rich meals. The chai patti guide carries the names, nutrition and brewing detail, and the chai recipe puts the stored leaf to work.

Does loose leaf tea expire?

It fades, it does not rot. Dry tea leaf holds almost no water, so it does not spoil the way milk or cooked food does; instead the aroma and strength slowly leak away. Kept airtight, dark, cool and dry, loose leaf tea is fine for about a year. A pack left open or damp goes flat within weeks, and mould appears only if moisture reached the leaf.

Can loose leaf tea get moldy?

Only if damp got in. Dry tea kept in a sealed tin in a dry cupboard has too little water for mould, but a wet spoon, steam or a damp monsoon shelf can change that. Mould shows as grey or green fuzz and a sour smell, and a batch that has any of it should be thrown away whole. Keep the leaf dry and the lid tight.

Can loose leaf tea go bad?

It goes stale rather than bad. The leaf slowly loses its aroma and body, and it picks up the smells of whatever sits beside it, so an old or badly stored pack brews a flat, dusty cup instead of a malty one. There is no sharp turn from good to bad; sniff the dry leaf and taste the brew before you judge a pack.

Does chai patti have caffeine?

Yes. Chai patti is black tea leaf, and the NHS list puts a cup of tea, black or green, at about 75 mg of caffeine. For the cup-by-cup detail, see how much caffeine is in tea.

Can loose leaf tea be stored in glass?

Yes, with one condition: glass must be airtight and kept dark. A jar with a rubber-sealed lid in a closed cupboard works as well as a tin. Clear glass on a lit shelf or windowsill lets daylight fade the leaf and bleach the brew, so if the jar is see-through, the cupboard it lives in does the dark work.

Where to store tea leaves?

In an airtight tin or jar, in a cool, dry cupboard, away from the stove, the kettle, direct sunlight and strong-smelling foods. The four enemies are air, light, heat and moisture, in that order, plus the masala dabba's aromas. A dark shelf at arm's height, with a dry spoon beside the tin, is the whole setup.