Can I Drink 10 Year Old Coffee Beans?

You should not drink coffee made from 10 year old coffee beans because the beans will be flavourless and may be rancid.

Roasted beans peak within fifteen days because oxidation quickly degrades the delicate oils and sugars, so ten years is far beyond peak freshness.

Green beans maintain quality for about fifteen months because their raw state resists rapid decay, so ten years still far exceeds safe flavour storage.

If you find vacuum sealed, cool, dark storage, the beans might be safe to brew because poor storage causes mould and rancidity, but the cup will lack aroma and sweetness.

Check the beans by smell and appearance: rancid or sour odours or visible mould mean you should discard them, because those signs indicate degraded oils or contamination.