"Single Barrel" refers to a type of whiskey or bourbon that is produced from a single aging barrel, rather than being blended from multiple barrels. This method allows for unique flavors and characteristics that reflect the specific barrel's wood, age, and environmental conditions. Each bottle of single barrel whiskey can vary significantly in taste, making it a favorite among enthusiasts. Typically, single barrel whiskeys are bottled at a higher proof and without chill-filtering, preserving the natural flavors. Brands like Jack Daniel's and Buffalo Trace offer single barrel selections, showcasing the distinct qualities of their individual barrels.