Spiced Rum Imperial Stout

Darker brown colour with copper highlights. The head is big, frothy, creamy, light-mocha coloured with good retention and some creamy clouds of lacing. Lots of spices in the nose and butterscotch base - so sweet and spicy. Some chocolate malts do come out to balance these a bit. The taste seems a little more blended with the spices and butterscotch, but rusty-grassy water lingers. Seeing rum and Imperial in the same title, one would think this would be much higher alcohol, but no. Interesting, but not quite what would make me have another.