The blend matures in several cask types, including Pedro Ximénez Puncheons, Oloroso Butts, and Virgin Oak Barrels. Specifically, the cask mix consists of Craigellachie PX Puncheon (22%), Balmenach PX Puncheon (21%), Craigellachie Oloroso Butt (21%), North British Virgin Oak Barrel (19%), and Blair Athol Virgin Oak Barrel (17%). This variety contributes to its complex flavor profile.