Ola Dubh (or "Black Oil") is so named because it is gloopy and viscous. This limited release has been matured in casks from Orkney’s award-winning Highland Park distillery to add complimentary whisky notes to what is already an amazing brew. It is chocolatey with a roasty, bittersweet aftertaste. Special Reserve 18, whisky notes: Highland Park 18 Year Old Single Malt Scotch Whisky was named Best Spirit in the World by F. Paul Pacult; it offers toffee sweetness, almond nuttiness and a prolonged, smoky aftertaste.