Knob Creek 21 Year Bourbon Whiskey

Knob Creek 21 Year Old Bourbon Whiskey is a limited-edition, ultra-aged Kentucky straight bourbon and represents the oldest age-stated release ever bottled by Knob Creek and James B. Beam Distilling Co. at the time of its 2025 launch. It’s been matured in American oak barrels for 21 years, giving it a deep bronze color and rich, layered character that pushes well beyond the brand’s classic 9 , 12 , 15 , and 18-year expressions. This bourbon is bottled at 100 proof (50 % ABV) and though limited supply can drive secondary market premiums. 

On the nose and palate, Knob Creek 21 showcases seasoned oak, caramelized sugar, and subtle smoke, with deep caramel and toasted oak notes accented by hints of fruit and toffee that reflect its extended maturation. Despite its age—which might make some bourbons overly woody—this expression stays balanced and approachable, with many reviewers noting that it avoids harsh tannins while still offering serious complexity. The mash bill is widely believed to follow Knob Creek’s traditional recipe of predominantly corn with rye and malted barley, which adds sweet spice and richness even after two decades in barrel. 

This release is significant both for Knob Creek’s lineup and for the broader bourbon world, as age-statement bourbons of this magnitude are rare and often highly sought after by enthusiasts. It’s designed to be savored neat or with a few drops of water to open up its intricate flavor profile, with a long, warm finish that reinforces its oak-driven maturity. Because it’s a limited release and the first in this age category for the brand (batch code KC001), its availability varies by market and allocation