Bourbon Whiskey
Bourbon is an American whiskey made from a mash containing at least 51% corn and stored in new charred oak barrels.
- Grain rule
- At least 51% corn in the mash
- Barrels
- New charred oak
- Origin
- Distilled and aged in the United States
What “straight” adds
Under US rules, straight bourbon must spend at least two years in new charred oak barrels. The two-year minimum belongs to the straight designation, not every bourbon.

