The shelf life of coffee raises a lot of questions. Every bag carries a date, but what does it actually mean? Can you still drink coffee after that date, and does it matter whether you have beans, ground coffee or capsules at home? The short answer: coffee almost never spoils, but it does gradually lose flavour. In this article you will read, per type, how long coffee keeps and how to preserve the flavour for as long as possible.
Best before: what that date really means
Coffee carries a best-before date. That is not a safety date like the one on meat or dairy, but a quality date. Coffee is a dry product in which bacteria can barely grow. After the best-before date, coffee does not become unsafe, but the producer no longer guarantees optimal flavour. If the coffee still smells good and there is no moisture or mould in the bag, you can simply brew it.
The real enemies of coffee are oxygen, light, moisture and heat. They break down the aroma compounds. The better you protect your coffee against them, the longer the flavour stays at its best.
How long do coffee beans keep
Whole coffee beans hold their flavour the longest of all formats. In an unopened, airtight bag, beans easily stay good for a year or longer. Once opened, the aroma slowly starts to fade, because oxygen can reach the beans. After opening, count on four to six weeks of top quality; after that, the flavour gradually declines without the coffee going bad.
Freshly roasted beans also need a short resting period: in the first days after roasting, carbon dioxide is still being released. Most beans taste best from about a week after the roast date.
How long does ground coffee keep
With ground coffee, the surface area in contact with oxygen is many times larger than with whole beans. As a result, the aroma fades faster. Unopened, a vacuum pack stays good for a long time, often well over a year. But after opening, you will notice the coffee tasting flatter after just two to four weeks. So buy ground coffee in pack sizes that match your consumption, and reseal the bag as tightly as possible after each use.
How long do capsules and pods keep
Coffee capsules are the champions of shelf life. The coffee is hermetically sealed in a capsule of aluminium or plastic, often under a protective atmosphere. Oxygen, light and moisture cannot get in. As a result, capsules stay perfectly drinkable until well past the best-before date, as long as the capsule is undamaged. A small dent is no problem, but if a capsule is leaking or bulging, it is better to throw it away. Precisely because of that long shelf life, capsules are ideal to stock up on when they are on offer.
How to store coffee properly
With the right storage method, you get the most out of every form of coffee:
- Airtight: store opened coffee in a well-sealed tin or jar, or fold the bag tightly shut with a clip.
- Dark: keep coffee in a cupboard, not on the counter in the light.
- Cool but not cold: room temperature is fine, the fridge is not. There, coffee absorbs moisture and odours.
- Dry: keep moisture away from the coffee and never scoop from the bag with a wet spoon.
- Away from strong smells: coffee easily absorbs odours from spices, onion or cleaning products.
The freezer is only useful as an emergency solution for a large stock of beans: divide them into portions, freeze them airtight and defrost each portion only once.
When coffee is truly no longer good
Coffee is rarely truly spoiled, but there are signs that mean you should throw a bag away. Think of a musty or rancid smell, visible mould, clumps caused by moisture or packaging that is damaged or bulging. If in doubt, brew a small cup: smell and taste will tell you enough right away.
Stock up smartly
The shelf life of coffee is mainly a matter of flavour: beans stay good the longest, ground coffee is the most sensitive and capsules last the longest of all. If you buy smart, you purchase unopened packs well in advance and store them cool, dry and dark. Browse our fresh coffee beans for the best flavour per cup, or stock up affordably on Nespresso capsules that stay perfectly fresh for months.
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