Hi Chris,
Oh my! I think maybe Dan should consider a "quarterly rant" from Chris and run it as a feature
People DO talk about freshness here a lot, but I don't recall them talking very much about "fresh bad coffee," or how they go out of their way to buy the freshest stuff in their local supermarket's bins. Or, to buy S$ coffee that hasn't reached the expiration date (?2 years post roast?). With the exception of people just starting out who find these forums from a google search, and then want to know why they can't make good "espresso" from some preground plonk in their steam toy, I just don't recall a lot of posts from people using mediocre to bad coffees that are "fresh."
Of course, there are lots of home roasters here and their roast product is highly variable. I'm certain that I'd find much or most of it to be undrinkable, even if fresh, with some notable exceptions, I am sure.
I would be willing to bet that most home roasters who are involved enough in their hobby that they read and post on these forums, go out of their way to buy good green beans from respected suppliers who are household names on these forums. That's a virtual certainty. These suppliers are, at the very least, doubling the cost of the green coffee when they sell it to us. We are paying them for their selection skills, and when they start to let us down, we will drop them like a rock. I have several former greens suppliers whom I haven't bought beans from, for years, and have no intention of going back to them until or unless they show they have something to offer that merits my business. But I digress.
Even after expending a whole lot of effort and expense on procuring the best available greens, one still has to deal with freshness, both in the greens and in the roast product. Freezing is a good way to preserve roasted coffee when done properly, and probably a good way to preserve greens also, although I have quite a bit more experience with the former than I do with the latter.
Coffee is very perishable, both before and after roasting. Freshness is not the only factor in making a good cup, but it is certainly an important factor that without which it almost doesn't matter.
ken