Is Bourbon Whiskey? The Complete Guide to How They're Related

Yes — bourbon is whiskey. Specifically, bourbon is a type of American whiskey defined by U.S. federal law. All bourbon is whiskey, but not all whiskey is bourbon. The difference comes down to specific production rules that bourbon must meet that other whiskey styles don't.

Here's exactly how the relationship works, what makes bourbon legally bourbon, and how it differs from other whiskey styles you'll see on the shelf.

The Short Answer

Bourbon is a specific category of whiskey. The U.S. Federal Standards of Identity for Distilled Spirits define bourbon by five rules:

1. Made in the United States
2. Mash bill (grain recipe) at least 51% corn
3. Distilled to no more than 160 proof
4. Aged in new, charred American oak barrels
5. Entered into the barrel at no more than 125 proof, and bottled at no less than 80 proof

If a whiskey meets all five rules, it's bourbon. If it misses any of them, it's whiskey but not bourbon. That's the entire distinction.

Whiskey Is the Parent Category

"Whiskey" (sometimes spelled "whisky" — Scottish, Canadian, and Japanese producers drop the "e") is the umbrella term for any distilled spirit made from fermented grain mash and aged in wooden barrels. The grain can be corn, rye, wheat, barley, or any combination. The aging time, barrel type, and production region determine what kind of whiskey you end up with.

Inside that umbrella, you have several major styles:

• Bourbon — American, corn-based, new charred oak, by federal law
• Tennessee whiskey — same rules as bourbon plus the Lincoln County Process (charcoal filtering)
• Rye whiskey — at least 51% rye in the mash bill, otherwise the same rules as bourbon
• Scotch whisky — made in Scotland, primarily from malted barley, aged at least 3 years in oak (used or new)
• Irish whiskey — made in Ireland, typically triple-distilled, aged at least 3 years in wooden casks
• Japanese whisky — modeled on Scotch tradition, made in Japan, increasingly with its own legal definition
• Canadian whisky — made in Canada, often a blend, aged at least 3 years in wooden barrels

What Makes Bourbon Specifically Bourbon

The 51% corn rule is what gives bourbon its characteristic sweetness. Corn ferments to a sweeter spirit than rye or barley, and at 51% minimum, every bourbon you taste leads with that sweet, vanilla-forward note.

The new charred oak rule is the second defining factor. New oak barrels are far more flavor-active than used barrels — the charring caramelizes wood sugars and pulls vanilla, caramel, and toasted oak flavors into the spirit. This is also why bourbon barrels, after their single bourbon use, are exported worldwide for use by Scotch, Irish, rum, and tequila producers — they still have plenty of flavor left for spirits whose rules allow used cooperage.

The "made in the United States" rule means bourbon can be made anywhere in the U.S., not just Kentucky. Most bourbon is made in Kentucky for historical and limestone-water reasons, but Indiana, Tennessee (though Tennessee whiskey is technically a separate category), Texas, and many other states produce bourbon legally.

What's the Difference Between Bourbon and Whiskey?

The phrasing of this question is a little misleading because bourbon is whiskey. The real question is: what's the difference between bourbon and other whiskey styles?

Bourbon vs. Scotch. Bourbon is American, corn-based, sweet, in new charred oak. Scotch is Scottish, barley-based, often peated or sherried, in used oak. Bourbon tastes like vanilla and caramel; Scotch tastes like malt, smoke, and dried fruit.

Bourbon vs. Rye. Both can be American, both can use new charred oak, but rye whiskey requires at least 51% rye in the mash bill (vs. bourbon's 51% corn). Rye is spicier, drier, and more peppery; bourbon is sweeter and softer.

Bourbon vs. Tennessee whiskey. Tennessee whiskey follows the same federal rules as bourbon plus an extra step called the Lincoln County Process — filtering through sugar maple charcoal before aging. The most famous Tennessee whiskey is Jack Daniel's, which is technically bourbon-eligible but legally identifies as Tennessee whiskey.

Bourbon vs. Irish whiskey. Irish whiskey is typically triple-distilled (vs. bourbon's twice), can use any combination of malted and unmalted grains, and is usually aged in used oak. Irish whiskey is lighter, smoother, and less sweet than bourbon.

Common Misconceptions

"Bourbon must be made in Kentucky." False. Bourbon must be made in the United States, but not specifically Kentucky. About 95% of bourbon is made in Kentucky, but legal bourbon comes from many states.

"Older bourbon is always better." Not necessarily. Bourbon ages aggressively in new charred oak — past 12-15 years, many bourbons start tasting overwhelmingly woody. The "best" age depends on the bourbon, the barrel, and the warehouse location. Some 8-year bourbons taste better than 23-year bourbons.

"Bourbon must be aged at least 4 years." Only "Straight Bourbon" must be aged at least 2 years. "Bottled in Bond" bourbon must be aged at least 4 years. Bourbon with no qualifier can technically be bottled younger, though almost no producer does so.

"Jack Daniel's is bourbon." Jack Daniel's meets all the legal requirements for bourbon but legally identifies as Tennessee whiskey because it goes through the Lincoln County Process. The brand chooses the Tennessee whiskey designation for marketing reasons, not because it's prohibited from calling itself bourbon.

What This Means When You're Shopping

If you see "bourbon" on the label, you're guaranteed certain things: U.S. origin, at least 51% corn, new charred oak, no caramel coloring, and (for "straight bourbon") a minimum age. That label is a regulatory promise about what's in the bottle.

If you see "whiskey" on the label without "bourbon," you don't know which subset you're getting. It could be a blend, a different style entirely (rye, Scotch, Irish), or a young American whiskey that didn't meet bourbon's requirements. Read the rest of the label.

For bourbon shoppers at Wooden Cork: browse our full bourbon collection, our expensive bourbon selection of allocated and rare releases, or our bourbon gifts collection for premium gift-ready bottles.

FAQ

Is bourbon a whiskey? Yes. Bourbon is a category of whiskey, defined by U.S. federal law.

Are bourbon and whiskey the same thing? Bourbon is whiskey, but not all whiskey is bourbon. Whiskey is the parent category; bourbon is one specific type.

What makes bourbon bourbon? Five federal rules: made in the U.S., at least 51% corn in the mash bill, distilled to no more than 160 proof, aged in new charred American oak, and entered into the barrel at no more than 125 proof.

Is Jim Beam bourbon? Yes. Jim Beam is the largest-selling bourbon brand in the world.

Is Jack Daniel's bourbon? Technically Jack Daniel's meets all the bourbon requirements, but it legally identifies as Tennessee whiskey because of the Lincoln County Process charcoal filtering step.