Storing coffee isn’t like storing sugar. There’s delicate flavours to preserve there, and coffee beans release CO2 while in storage, so you can’t just put them in a hermetically sealed container. Well, you can… but it’s better if you put them in something like the Friis Coffee Vault. It features a one-way valve that lets the carbon dioxide out, but prevents anything else from entering and tainting that most precious of flavours.
For $22 you get a 16 oz jar, a measuring spoon and a one year supply of freshness valves.