What degree of proof is bourbon allowed to be distilled at?

Bourbon is allowed to be distilled at a maximum proof of 160, which corresponds to an alcohol by volume (ABV) of 80%. This regulation is crucial because it helps maintain the overall character and flavor profile associated with bourbon. Distillation at this proof allows enough of the grain flavors and complexities to remain in the spirit, resulting in a smoother and more palatable product when it is subsequently aged.

Furthermore, the law requires that bourbon must be entered into the barrel for aging at no higher than 125 proof (62.5% ABV); this regulation supports the maturation process and ensures that the final product reflects the essence of the grains used in its production. Understanding these legal requirements provides insights into how bourbon is crafted and the reasons behind its unique qualities.