As CafeBlue said frozen fish doesn't taste as good as fresh fish, but even worse than that, most people who eat fish eat something stored with a process called superchill, it's done in the trawlers for weeks while they fish. So they don't have to call it frozed, this fish can then be frozen again. So even "freesh" fish isn't fresh. and many people even say what a huge difference between "fresh" fish and frozen, which there is. BUT I used to go sea fishing and bring friends back fish caught a few hours previously and never "superchilled".....you should have seen their faces....5 years on an I still get asked for it!!
Coffee is the same, you can freeze it, chill it and do lots of things to it, but it never tastes as good as it can fresh. Unfortunately many people take fresh coffee and ruin it. I have written an article on why 1 way valve bags are good and sealed bags/containers are bad for freshly roasted coffee (applies mainly to home roaster, but relevant to commercial roasters as well). Just havn't got around to publishing it just yet.
I was taught that ideally Coffee should be roasted and packed as soon as it is cool enough, in a 1 way valve bag (or one way valve container), with as little airspace as possible within the bag. Once opened coffee should be tranferred to an airtight container, with the minimum headspace, as the one way valve won't do any good after the coffee has degassed. It's also the reason why roats taste/smell better if they are put in a 1 way valve container/bag, than if just dumped into a sealed container.
I once came across a roaster whose coffee tasted very poor and I was roasting at the time and my coffee tasted far superior (it wasn't just me that said so). I even found out this roaster was using far superior coffee beans to me....it was in the handling of coffee after roasting....makes a huge difference.
P.S. Oh I have heard rumours lately about green coffee being frozen (commercially as well) :shock: , I was told than one of the things green coffee should never be exposed to is frost. Mabye freezzing it is different in some way, but wow, I can't imagine freezing green coffee being any good.