These Were Specially Built Oloroso Sherry Butts With Heavily Charred Virgin American Oak Heads Which Enhance The Richness Depth And Spicy Vanilla Flavours.An intriguing blended malt from Mossburn, bringing together a selection of whiskies across Speyside, blending them and then further maturing them in special 'Mossburn Cask Bill #2' casks. These are custom made Oloroso sherry butts fitted with heavily charred American oak heads, adding extra layers of American-oak vanilla and spice to the sherry-cask fruit.