I don’t actually know is the answer, and without wishing to join in the deafening chorus of half-understood coffee science dick-measuring that coffee people do, I think it’s to do with the way the oil in the coffee is developed wrt heating method. I’m happy enough to have tested that 3 week coffee tastes better than 3 day coffee the way I roast it without getting too much into the why and the how.
To be honest as I was writing it, I figured the answer is "go read this massive dossier of papers on the subject" or "no one knows". At this point I've studied enough science to be comfortable in the "I don't know why it works, but it does" camp!
I don’t actually know is the answer, and without wishing to join in the deafening chorus of half-understood coffee science dick-measuring that coffee people do, I think it’s to do with the way the oil in the coffee is developed wrt heating method. I’m happy enough to have tested that 3 week coffee tastes better than 3 day coffee the way I roast it without getting too much into the why and the how.