The Balvenie Doublewood 12 Year OldThe Balvenie Doublewood 12 Year Old DoubleWood 12 was launched in 1993, using a process designed by our Malt Master David Stewart in 1982, now commonly known as 'wood finishing'. To make The Balvenie DoubleWood, David Stewart MBE takes whisky that has spent at least 12 years in traditional whisky casks, American Oak ex bourbon barrels and hogsheads, and moves it to Spanish oak ex Oloroso sherry casks for an additional nine months. The whisky is then