Two centuries of excellence and Malts of the highest order are required to create XR 21. John Walker devoted his life to the development of protocals which could deliver a Whisky of refinement and consistency. When stewardship passed to Alexander Walker in 1857, branding became another priority with the introduction of a square bottle and slanted label. XR 21 Years Old is assembled according to the hand written notes of Alexander Walker himself, a selection of Johnnie Walker's finest and most arcane, including priceless stocks of the bygone Brora Malt.