Knob Creek 18 Year This latest release marks the oldest expression from Knob Creek to-date. Aged twice as long as its flagship bourbon and bottled at 100 proof, Knob Creek 18 Year Old offers a complex, yet balanced, liquid due to its mature age. Extensive aging in Kentucky rackhouses give this bourbon its rich copper color and unique flavor profile, delivering notes of caramelized oak and sweet vanilla with a warm finish; further demonstrating how great things take time and patience  yielding remarkable results.