The Whistler Double Oaked is a hand-selected, premium Irish whiskey expression that is crafted in small batches using some of Ireland’s finest malt and grain whiskeys. The blend is 20% single malt (malted barley) whiskey and 80% grain (corn) whiskey. The finest malt whiskey and grain whiskey is chosen by the Head Distiller to be matured in ex-bourbon barrels before marring them together in ex-sherry barrels to finish this exquisite blend.