Nose: Sweet grain, toasted corn, a bit of nice spice, a rounded honey-like sweetness. Searching for stout influence leads me to a chocolate malt note, not chocolate itself, but that dark note from toasted barley. There's a vanilla milk-chocolate sweetness in the back too.
Palate: Light and watery at first. Turns dark honey sweet with a surprising amount of light floral and a bit of citrus. The stout is there in the back as well with a woody chocolate. A bit of dark toffee with a coffee hint, then back to sweet dark honey. Loads more chocolate-coffee stout influence now on the second go. The stout hits mid-to-back-palate where it lingers on the way back of the tongue.
Finish: Medium-short, slightly sweet. Milk chocolate is the main lingering note. Maybe a bit of peach too? odd. Much more milk chocolate now that lingers way on the back of the tongue with a bit of woody vanilla.
Conclusion: At the first sip, I thought this was going to be pretty boring, but after giving it a little while to open up it changed completely. So much chocolate now that I'd have a hard time drinking more than a small pour at a time. I'd honestly prefer a little less sweetness, but I can also see why it is so sweet. A pour of this for desert might be a good way to drink it. I'm impressed, for a budget whiskey, this one's got some real complexity and character!