I found this to be VERY heavy on the whisky/bourbon front, but I expect it was due to my choice of spirit (Barrelling Tides' Windward). I also used a ginger liqueuer instead of a syrup and definitely needed to add extra sweet. Would be curious to know how it would taste with slightly less whisky and something more nutty added - say amaretto, frangelico, or even some butterscotch.