Patent ID: 6945014

Claim:
A coffee storage method, for storing coffee within a jar having a bottom, a top rim, and a cylindrical side wall extending between the bottom and top rim which define an interior volume within the jar, using a piston having a top and bottom and which fits closely within the side wall and has a one way valve which allows air to escape from beneath the piston to above the piston, wherein the jar has a lid which is sized to rest upon the top rim of the jar, and a stem which is selectively attachable to the piston top, comprising the steps of: placing a volume of coffee within the jar; defining a storage volume within the jar interior volume beneath the piston by extending the piston within the container spanning between the side wall; decreasing the storage volume until it is substantially equal to the coffee volume by allowing air to escape from the storage volume through the piston by mating the stem with the piston top and pressing the piston downward toward the jar bottom by pressing the stem downward.