What defines the term "straight whiskey"?

The term "straight whiskey" refers specifically to whiskey that must be aged in new charred oak containers. This aging process significantly impacts the flavor and character of the whiskey, as it allows for interaction between the distillate and the wood, leading to the extraction of various compounds that contribute to its taste, aroma, and color. The requirement for the use of new charred oak barrels is essential, as this defines the quality and type of aging that contributes to the distinct identity of straight whiskey.

The regulation surrounding straight whiskey also stipulates that it must be aged for a minimum of two years. However, the hallmark characteristic remains the necessity for the whiskey to be aged in new charred oak barrels, differentiating it from other types of whiskey that may use used barrels or other aging methods. This aspect is fundamental to the designation of "straight whiskey" and highlights the traditional practices in whiskey production that contribute to its unique qualities.