Sealing coffee in an airtight container, with the air removed via vacuum. Green coffeeGreen coffee refers to the processed seed of the coffee tree fruit. Coffee is a flowering shrub that produces fruit. The seeds of the fruit are processed, roasted,... and roasted coffee can both be vacuum packed to extend shelf life. In our experience, vacuum sealing can add 6 months of shelf life to green coffee, when it is an appropriately “rested” lot (i.e. has low water activity measurement) and is kept in a cool, dark place.