Balvenie Doublewood 25 years has been released to mark the 25th anniversary of the 12 year old Doublewood. The whiskey matures substantially the entire period in barrels of an American oak, before it is finished in ex-Oloroso barrels for three months. Nose: spices, sweets and learn. Taste: oak, some earthy notes, vanilla. Cinnamon, dried fruit and chocolate. Finish: tobacco, herbs and vegetables.