JOHNNIE WALKER® XR ™ 21 Year Old is an exclusive blend inspired by the handwritten notes of Sir Alexander Walker, the grandson of founder John Walker. Sourced from the exclusive reserve of aged casks, including those of the now silent Brora distillery, the whisky has been allowed to age for twenty-one years, achieving a smooth, deep blend - the depth and intensity of aged oak, the subtle notes of vanilla, the sweet hint of golden honey and a very smooth finish.