I've never written a critique before so please bear with me here. I just put random scores on the side, just because I'm not too sure what to do with that, sorry if you no longer want a critique on this.
Okay, I want to start with saying that I do like this logo, but I feel the look of it is a little to harsh for a coffee shop. It's a little to edgy (literally), sharp, and drastic in the color differences I think. When making a logo for a coffee place, I feel that the colors used should mostly be warm and inviting as that is the vibe that most coffee shops do give off. The font does help with that though. It gives it a slight feel of milkshakes over the counter.
The thing in the circle really takes away from the logo. It makes it hard to concentrate on any other part of the logo, which ruins the whole, 'a logo needs to make you read it from left to right." It messes up the flow of the picture. This would be a much more fitting logo for an optical illusions shop or a magic shop. Something along those lines.
Though do take what I'm saying with a grain of salt please!