Ok, so yes – the best way to keep your coffee fresh is to just buy fresh coffee regularly, and not use it two weeks after the roasting date.
However, some people don't drink a lot of a coffee (or don't drink coffee at all!), but want to keep some 'nice coffee' in the house for when guests arrive.
In this situation, will keeping ground coffee in the freezer help retain freshness/flavour?
Best Answer
Yes, buying fresh coffee is better and grinding right before using is optimal. I think we mostly agree on that. That said, it IS possible to freeze coffee without completely destroying it. There are a number of variables that you want to account for. Here is a short summary:
There is a limit to how long you can freeze it. I wouldn't leave it more than a few months? Here's a good, but long read on the subject, including some taste test results. If you're really seriously interested, I'd give that a good read.
If you're not a big coffee drinker, and your guests aren't picky either, you might not care about all those variables. I'd do some testing to see what works for you (don't test with the expensive stuff of course...). If you and your guests can't taste the difference, the extra precautions are kind of for naught. I have certain family members who claim to prefer the crappy, flavourless stuff for example. :-P sigh
Last note. Never store coffee in the fridge. Why not? Quoted from here: