John Walker & Sons XR 21 years is a blended whiskey made in honor of Sir Alexander Walker. In 1920 he received the ultimate accolade, namely the Order of the British Empire. In 1934, John Walker & Sons acquired the "Royal Warrant" for the commitment they make to the art of whiskey. This "Royal Warrant" today is still valid under Queen Elizabeth II. The limited 21 XR comes from the private stock of the Master Blender. In this edition each bottle is assigned a unique number. The whiskey has an oak and vanilla flavor with also a hint of pure honey.