Balvenie 12yr Double WoodBalvenie DoubleWood is, to not much surprise, aged in two kinds of oak casks! It was firstly matured in refill American oak casks before it was treated to a finish in first fill European oak Oloroso sherry butts for an additional nine months. The expression was launched in 1993, and has become a somewhat iconic whisky over the years. Even at 12 years old, this rich and complex dram is an excellent example of what the Balvenie distillery can craft.