This is interesting. There's an even caramel undertone that reminds me of Bourbon barrel aged beers, except that it's not offensive to me.
There's some interesting spice and, you guessed it, sweet potato undertones as well. Pretty good.
Definitely blueberries with an undertone of coffee. Fairly nicely balanced unless you're looking for a roasty bean flavor from your stout. This is more like wet beans and blueberry skins.
I'm not sure if I'm selling this or not.
I think maybe it was too flat when I got it, which probably didn't help, but it did get me up close with the flavors. Quite roasty-sour, a bit much, with some chocolate on top and a ashy coffee finish. Medium-thin texture. I'd like to try this again under more ideal circumstances.