How to Store Matcha So It Stays Fresh and Green

Matcha is a fresh product, not a pantry staple. Because it's a fine powder with a huge surface area, it loses colour, aroma and sweetness quickly once it meets its four enemies: air, light, heat and moisture (plus a fifth — strong odours, which it soaks up). Here's how to slow all of that down.

Keep it airtight

Oxygen is the main culprit. Store matcha in an airtight tin or a resealable pouch pressed flat to push out air, and close it the moment you've scooped. If you buy in bulk, decant a week's worth into a small tin and leave the rest sealed.

Keep it cold — carefully

Unopened matcha keeps best cold. A fridge or freezer slows oxidation dramatically. The catch is condensation: always let a chilled, sealed package return to room temperature before opening, or moisture will bloom on the cold powder and clump it. Once a tin is in daily use, a cool, dark cupboard is often more practical than repeatedly chilling and warming it.

Keep it dark and dry

• Store away from windows, ovens and the top of the fridge — light and heat both degrade it.
• Never let a wet spoon or steamy air near the tin; use a dry scoop every time.
• Keep it away from coffee, spices and anything fragrant — matcha will take on the smell.

How long does it last?

Sealed and cold, matcha holds well for months up to its best-before date. Opened, use it within about four to six weeks for peak flavour — it's still safe after that, just progressively duller. Signs it's past its best: the colour shifts from jade toward olive or yellow-brown, the sweet aroma fades, and the taste turns flat or hay-like.

Freshness starts upstream, too — matcha that arrives vivid lasts longer than matcha that was already tired. We ship in nitrogen-flushed packaging with cold-chain available; see the specifications or request a sample.