What is the aging requirement for Bourbon whiskey?

Bourbon whiskey must be aged in new, charred oak barrels. The legal requirement for it to be designated as "straight bourbon" is a minimum aging period of two years. If bourbon is aged for less than four years, it must carry an age statement on the label. This aging process is crucial as it allows the bourbon to develop its flavors and character, drawing compounds from the charred oak which contribute to its color, aroma, and taste.

While there are other types of whiskey with differing aging requirements, bourbon specifically stands out with its two-year minimum to achieve its quality designation. The aging principle emphasizes both the importance of the barrel and the influence of time on the spirit’s maturation.