Single barrel bourbon
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Single barrel bourbon is a term that describes a premium class of bourbon whiskey in which each bottle comes from an individual charred oak barrel, instead of being the product of many different barrels blended for uniformity of color and taste.
The whiskey from each barrel is bottled individually with each bottle bearing the barrel number and in most cases the dates for the beginning and end of aging; none of the whiskey is blended, creating a unique flavor for each barrel.