A pleasant somewhat sweet, sugary nose, and the rum is clearly identifiable. An initial sugary velvet gives way to a warm, candied oak, which then leads to a reasonably long, mellow finish. I found this to be an extremely interesting, well-executed cask-finished scotch.
I also really like this. The rum adds some great leather and spicey wood flavors that are not in the regular BenRiach. The sweet sharp fruitiness is softened a bit by the smokey tobacco notes from the dark rum spices. Really nice and almost a B+.