Coffee does not spoil the way milk spoils. It goes stale - quietly, over weeks, as oxygen steals everything that made it worth drinking. Here is how long you actually have, and how to buy yourself more time.
Whole bean coffee: 2 to 4 weeks at peak
Roasted whole beans are at their best for roughly two to four weeks after roasting. After that they do not become dangerous, just dull. The aromatics fade first, then the sweetness, until what is left tastes like the idea of coffee.
Ground coffee: 1 to 2 weeks at peak
Grinding multiplies the surface area exposed to air, and staleness moves accordingly faster. Ground coffee is at its best for a week or two after opening. If you can, buy whole bean and grind what you need, when you need it. If you cannot, we sell every roast ground for auto-drip at the same price - just buy smaller and buy again.
Brewed coffee: hours, not days
Black coffee on the counter is fine for a few hours. After that it oxidizes and turns bitter and hollow. Coffee with milk in it belongs in the fridge within two hours, and even then, drink it within a day.
What actually kills coffee
- Oxygen. The main enemy. Keep the bag sealed tight.
- Light. Store it in the dark - a cupboard, not the counter.
- Heat. Room temperature, away from the stove and sunny windows.
- Moisture. Never the fridge. It is humid in there, and freeze-thaw cycles ruin beans.
The short version
Sealed bag, cool dark cupboard, whole bean if you can, ground if you must. Buy what you will drink in a month. And if the world ends, drink it anyway - stale coffee is still coffee.
Brewing methods that respect the beans: the brewing guide.