What is green coffee storage and why does it matter?

Green coffee is a living material - hygroscopic, meaning it absorbs and releases moisture in response to its environment, and slowly changing in cellular structure and chemistry from the moment it's processed. Storage conditions determine how quickly it ages and how much quality is preserved between origin and roastery.

Ideal conditions: cool (15–20°C), stable temperature, around 60% relative humidity, dark, and away from anything with a strong smell. Green coffee readily absorbs ambient odours - bags stored near paint, chemicals, or other strong-smelling products will pick up those smells in a way that roasting won't fix.

Standard packaging is jute or sisal with an inner GrainPro or hermetic liner. Most specialty green should be used within 12–18 months of harvest. Beyond that, expect a progressive loss of brightness and complexity as the coffee transitions towards the flat, woody character of past crop.