Bourbon whiskey bourbon and Tennessee whiskey together. According to the Distilled Spirits Council, during 2009–2014, the volume of 9-liter cases of whiskey increased by 28.5% overall. Higher-end bourbon and whiskeys experienced the greatest growth. During 2009–14, the volume of the value segment increased by 12.1%, premium by 25.8%, high-end premium by 27.8%, and super-premium by 123.8%. Gross supplier revenues (including federal excise tax) for U.S. bourbon and Tennessee whiskey increased by 46.7% over the 2009–14 period, with the greatest growth coming from high-end products (18.7% growth for value, 33.6% for premium, 44.5% for high-end premium, and 137.2% for super-premium). In 2014, more
Corn whiskey be barreled at lower than 125 proof (62.5% abv). In contrast, a whiskey distilled from a mash consisting of at least 80% corn in a charred new oak barrel would be considered bourbon. Aging is usually brief – six months or less – during which time the whiskey absorbs color and flavor from the barrel while the off-flavors and fusel alcohols are reduced. A variant called straight corn whiskey is also produced, in which the whiskey is stored in used or uncharred new oak containers for two years or more. Whiskeys produced in this manner and aged for at least