My guess is it's a blend of Highland Park and Caol Ila. From the Scotch Malt Whisky Society: Our latest blended malt is comprised of malt whiskies from the islands of Islay & Orkney. We made use of bourbon barrels and hogsheads, as well as Spanish and American oak sherry hogsheads, which were seasoned with Oloroso & Pedro Ximenez wines. The resulting whisky is sweet, rich & intensely smoky, as the medicinal character of Islay peat marries with the floral & earthy smoke of the Orkney isles.