[LargoLasskhyfv]

Regarding 4. Store the beans sealed as tightly as possible (exposure to oxygen/air speeds up their deterioration)

I'm always wondering if i did a great ghetto-style hack, or just deluding myself? What is a tight seal in the context of outgasing co²? When you buy beans in bags they have to have a kind of vent/seal, because otherwise they would burst. So i used a leftover 500g can from a protein shake, and the clear plastic protecting lid from a 500g yoghurt which sits over the aluminum foil, and fastened the clip with the use before date from a toast/sandwich bag as handle to pull it out with adhesive tape to it. The idea being: when i insert the clear plastic lid into the can over the coffee, it makes a DOUBLE seal with a buffer of co² between the cans loose lid and the inner plastic lid. It is sitting so tight that i can see it slowly glide down on the air cushion which it replaces, the more empty the can gets. Anyways, just four always availabe leftover parts. Am i ingenious, or what? :-)