The most legally diverse whiskey nation on earth โ governed by TTB 27 CFR ยง5.143 and spanning seven distinct categories, from sweet wheated bourbons to fiery high-rye expressions.
American whiskey is regulated by the Alcohol and Tobacco Tax and Trade Bureau (TTB) under 27 CFR ยง5.143. The United States Senate also designated Bourbon as "America's Native Spirit" via resolution in 1964. No other country may legally label a spirit as "Bourbon Whiskey."
| Style | Corn | Rye | Wheat | Malted Barley | Character |
|---|---|---|---|---|---|
| High-Rye | 60โ65% | 20โ35% | 0% | 5โ10% | Spicy, dry, peppery |
| Wheated | 68โ75% | 0% | 16โ20% | 8โ12% | Soft, sweet, approachable |
| Standard | 70โ75% | 12โ15% | 0โ5% | 8โ12% | Classic caramel, vanilla, oak |
| High-Corn | 80%+ | 5โ10% | 0% | 5โ8% | Sweet, light, mild |
Before entering the barrel, the new-make spirit is dripped through or steeped in at least 10 feet of sugar-maple charcoal. This mellows harsh congeners and imparts a distinctive smoothness. Jack Daniel's uses this process; George Dickel does too (calling it their "mellowing" step). Benjamin Prichard's is the notable exception โ legally exempted from the LCP by Tennessee state law.
Wheat whiskey differs from wheated bourbon โ the wheat is the primary grain (51%+), not a secondary flavoring grain. The result is a delicate, approachable spirit. Bernheim Original (Heaven Hill) is the most prominent commercial example.
Corn whiskey does NOT use new charred oak โ a key distinction from bourbon. If aged, it must go into used or uncharred oak. Essentially the commercial whiskey cousin of moonshine. Sweet, light, and mild. Examples: Mellow Corn, Ole Smoky.
An emerging American category that uses malted barley as its primary grain. Must use new charred oak (unlike Scotch), producing a fundamentally different character. Craft distilleries are driving innovation here.
A blend of at least 20% straight whiskey with neutral grain spirit. The balance can be up to 80% NGS โ making this the lightest and most commercial American whiskey category. Examples: Seagram's 7, Kessler.