What is the minimum aging requirement for straight whiskey in the United States?

The minimum aging requirement for straight whiskey in the United States is two years. This stipulation comes from the regulations established by the Alcohol and Tobacco Tax and Trade Bureau (TTB) regarding the labeling and production of different types of spirits.

Straight whiskey must be aged in new charred oak containers, and the two-year aging requirement ensures that the whiskey can develop the necessary flavors and characteristics that distinguish it from other types of whiskey, such as blended or non-straight varieties. If straight whiskey is aged for less than two years, it cannot be labeled as "straight," which emphasizes the importance of this requirement in the industry.

While some whiskies may be aged for longer periods to enhance flavor and complexity, two years is the minimum threshold that guarantees certain qualities associated with straight whiskey.