The good ol’ mason jar has been working perfectly for storing old beans. The one thing I somehow managed to overlook is the lid to the mason jar. I was so stoked about the paint job and forgot about the gas the beans give off. The other day I went to unscrew the lid and it popped off and made a loud noise. DUH!!! There was a bunch of gas built up behind the lid because it had no where else to go. My friend Marcus Young recommended cutting out the one way valve from a bag of coffee!!!!! IT WORKED! Have fun!