Scotch vs Bourbon: What's the Difference?

Scotch vs Bourbon: The Essential Guide

Both are whisky. Both are aged in oak. But Scotch and bourbon are fundamentally different spirits with distinct production rules, flavor profiles, and traditions. Here's everything you need to know.

Where They're Made

Bourbon must be made in the United States. While it can technically be produced anywhere in the US, Kentucky is home to over 95% of the world's bourbon supply. Scotch must be made entirely in Scotland — distilled, aged, and bottled there.

The Grain Bill

Bourbon must be made from a mash bill of at least 51% corn, giving it a naturally sweeter character. The remaining grain is typically rye, wheat, or malted barley. Scotch single malt is made entirely from malted barley, while Scotch blends combine malt and grain whiskies.

Aging Rules

Bourbon must be aged in new, charred American oak barrels — and there's no minimum aging requirement (though it must be aged at least 2 years to be called "straight bourbon"). Scotch must be aged a minimum of 3 years in oak casks, often ex-bourbon barrels from the US.

Flavor Profiles

Bourbon tends toward vanilla, caramel, brown sugar, and baking spice — rich, sweet, and approachable. Scotch is more varied: Speyside expressions lean fruity and honeyed, Highland whiskies are robust and complex, and Islay Scotches are famously peaty and smoky.

Proof & Bottling

Bourbon must enter the barrel at no more than 125 proof and be bottled at a minimum of 80 proof. Scotch must be bottled at a minimum of 80 proof (40% ABV) with no upper limit for cask strength expressions.

Which Should You Choose?

If you love sweetness, vanilla, and caramel — start with bourbon. If you prefer complexity, fruit, or smoke — explore Scotch. The best answer? Try both. We carry an exceptional selection of premium bourbons and single malt Scotch whiskies at THE BOURBONVAULT HQ.