I have no idea why this scent doesn't have a full 5-star rating - I think some of these reviewers are just cynical or maybe their noses are broken. At any rate, this FO is a flawless duplication of fresh ground/brewed coffee if I've ever smelled one. I got this originally as a sample, and fell in love with it. I rarely make snap decisions, so I also ordered similar scents from 3 other candle making companies out there, and of the 4 total samples I tried, the Fresh Coffee from Candle Science won out by a long shot. Some of the other samples were nice, and some were very nice and much more complex than CS Fresh Coffee, but this one is by far the most potent.
I make candles, so you typically have a significant drop in scent between cold and hot, and between FO in a bottle and FO mixed in wax, however, with Fresh Coffee, the scent stays pretty much static all the way through, so what you smell in the bottle is what you'll get in your final product. I'm a fan of coffee in general and I don't smell ANY chemical odors from this oil, and my nose is pretty darn sensitive. Bottom line is that I highly recommend this to anyone who is serious about their coffee fragrances, and I encourage you to disregard the negative reviews on this product. Instead, grab a sample bottle of your own and give it a shot for yourself - you won't be disappointed.