Single barrel whiskey is a premium class of whiskey in which each bottle comes from an individual aging barrel, instead of coming from blending together the contents of various barrels to provide uniformity of color and taste. By contrast, some other whiskeys, even ones that are not blends, may be combined from more than one batch, or even from differing years to achieve consistency. The whiskey from each barrel is bottled separately, with each bottle bearing the barrel number and in most cases the dates for the beginning and end of aging. Each barrel is believed to contribute unique characteristics to the finished whiskey.
