Entered into the barrel for aging at no more than 125 proof Bottled at 80 proof or more
Distilled to no more than 160 (U.S.) proof
Aged in new, charred oak barrels
Made from a grain mixture that is at least 51% corn
Produced in the United States
Bourbon has no minimum duration for its aging period. The exception is straight bourbon, which must be aged for at least 2 years. Also, any bourbon aged less than four years must state the age of the spirit on the bottle.
Bourbon that is labeled blended may contain added coloring, flavoring, and other spirits but at least 51% of the product must be straight bourbon.