What I found with coffee is that it has to be vaped at just the right temperature. I got some for a friend from a buddy who sells a ton of it. I tried it in his ego with a crappy clearo and it was awesome. Then borrowed a squirt an put it in my rocket at .8 ohm and it was horrible. Tried it again in an evod with a 1.8 coil it was good again. My conclusion if you find coffee tastes bad and you have a VV turn it down. If you run an rba or rda don't go anywhere near sub ohm with these flavors as they are delicate. Although some people might actually enjoy the burnt coffee taste so YMMV with that one.