
Bourbon is an American whisky distilled from a fermented mash of at least 51 percent corn and aged in charred new oak.
Corn-sweet on the palate, carrying vanilla and caramel from the char, with a woody, toasted-oak aroma and a medium, rounded body.
Poured as the base measure, it anchors stirred and built drinks with high strength and barrel-derived aroma; smaller quantities lend corn-sweet, oaky depth as an accent. It needs no added sugar of its own, so its rounded sweetness is often balanced against acidity or bitterness in the build.
Another American charred-oak whisky preserves the profile best: Tennessee whiskey is the closest swap, matching the corn mash and new-oak aging with only a slight charcoal-mellowed softening of grain edge, while rye whiskey holds the strength and barrel character but runs drier and spicier from its rye-dominant mash.
Bourbon requires a mash of at least 51 percent corn, whereas American rye whiskey requires at least 51 percent rye. The two otherwise share the same distillation ceiling of 160 proof, barrel-entry ceiling of 125 proof and new charred oak aging; the corn base skews bourbon sweeter and fuller, while rye is drier and spicier.
Distilled at not more than 160 proof from a corn-dominant mash, it is entered into charred new oak barrels at no more than 125 proof and matured entirely in the United States; the requirement for new charred oak, never reused, sets it apart from most other whisky styles. The base designation carries no minimum aging period, while "straight bourbon" requires at least two years in wood.
Bourbon is a distinctive product of the United States, and by federal standard the name may not be applied to any whisky not distilled and aged there.
Boulevardier – IBA
Bourbon