american whiskey
Bourbon
America's native spirit, defined by corn, charred oak, and a 1964 act of Congress.
Bourbon is an American whiskey distilled from a grain mixture that is at least 51% corn and aged in new charred oak barrels. Federal law has defined the category since 1964, when Congress declared bourbon "a distinctive product of the United States." The new-oak requirement gives bourbon its signature sweetness — vanilla, caramel, and toffee notes drawn from charred wood — setting it apart from Scotch and Irish styles that typically mature in used casks.
Overview
How Bourbon Is Made
From cooking corn in a mash tun to filling freshly charred barrels, bourbon follows a regulated sequence of steps that distinguishes it from other American whiskeys. Most bourbon also uses a sour mash process, recycling spent stillage from the previous run to control pH and add consistency across batches.
The Bourbon Barrel
Federal law requires bourbon to mature in new charred oak containers — a rule that makes the barrel the single largest influence on the finished whiskey's flavor. Char levels range from 1 (light toast) to 4 ("alligator char"), each unlocking different compounds from the wood.
Flavor
Bourbon's sweetness comes from its corn-heavy mash bill and the caramelized sugars in new charred oak. Vanilla, caramel, toffee, and baking spice are the signature notes, but the specific grain ratios, yeast strain, and warehouse position shift the balance from batch to batch.
Proof & ABV
Proof is twice the ABV percentage — a 100-proof bourbon is 50% alcohol. Federal regulations cap bourbon at 160 proof off the still, 125 proof into the barrel, and require a minimum of 80 proof at bottling. Understanding these limits explains why barrel-proof and bottled-in-bond expressions taste the way they do.
History
Bourbon's origins trace to late-18th-century Kentucky, where Scots-Irish settlers distilled surplus corn. The name likely derives from Bourbon County, though the exact etymology is debated. Congress formalized the category in 1964, declaring it a distinctive product of the United States.
Wheated Bourbon
Wheated bourbons replace rye with wheat as the secondary grain, producing a softer, rounder profile. The style is most associated with Maker's Mark and the Van Winkle line, but the approach dates back decades and continues to gain popularity among drinkers who prefer less spice.
High Rye Bourbon
High rye bourbons push the rye percentage well above the minimum, typically 20-35% of the mash bill. The result is a spicier, more assertive bourbon that bridges the gap between traditional bourbon sweetness and the peppery bite of straight rye whiskey.
Bourbon vs Rye
Bourbon and rye whiskey follow the same federal framework — new charred oak, same proof limits — but the lead grain flips everything. Bourbon's corn majority delivers sweetness and body; rye's grain majority produces spice, dryness, and a leaner mouthfeel.
Bourbon vs Scotch
Bourbon and Scotch differ in nearly every dimension: grain, barrel policy, climate, and minimum age. Bourbon's new charred oak and corn-forward mash bill produce a sweeter, bolder spirit; Scotch's used casks and barley base lean toward malt, fruit, and — in coastal regions — peat smoke.
Small Batch & Single Barrel
"Small batch" and "single barrel" are label terms, not legal definitions. Small batch typically means a blend of a few dozen barrels selected for consistency, while single barrel is exactly what it says — one barrel, one bottling. Neither term is regulated, so what counts as "small" varies by producer.