Why we let coffee rest

You've just bought some coffee and you're ready to brew it, right? Well, maybe, but probably not. People used to think that "fresh is best" and coffee would be tastier if you had it closer to when it was roasted. Turns out reality is more complicated.

Freshly roasted coffee isn't chemically settled. The roasting process creates hundreds of aromatic compounds, and in the first days many of them are sharp or harsh. As the beans sit, the more volatile compounds fade and others settle into a more balanced set of aromas. A coffee brewed too early tends to taste sharp, thin, or oddly muted, with the sweetness and fruit you want hidden behind a rough edge. Resting lets the flavor sort itself out, but if coffee sits for too long then the good volatile aromatics also fade, leaving a flat, fairly boring cup.

So, how long should coffee rest? It depends on the particular bean, how you're brewing it, and your own preferences. We label every coffee with our suggested minimum rest times, alongside the brewing method we suggest for it. To be clear - these are just guidelines to help you get a great cup and not hard rules. So if you're making an espresso with a floral Ethiopian or a pourover with a heavy-bodied Colombian, you might find something different works best. Experiment, brew, and enjoy!