106.31 calories for 1.5oz of standard whiskey.
I'd go on the assumption that it's all carbs, as that impact vs. non-impact carb business seems to be hocus-pocus. Bottom line: it'll bring you out of ketosis, so it's carbs. If you're not on some sort of hardcore ketogenic diet, have a couple and don't worry about it...just take some R-ALA beforehand to minimize the damage.