I've had the Coffee Stout a few times, each time I appreciate the creativity and craftsmanship. It tastes exactly as it sounds, coffee and beer. It's not bad - more of a novelty. I wouldn't work the sixer all night but it could be a good finisher. The last time I had it my comments were, "I could go for a piece of cheesecake".
Breakdown: nice and dark. moderate head. lingers on the tongue a bit (like coffee). coffee smell and aftertaste - well brewed, strong, black coffee (Kaldi's Coffee to be exact).
I like it