Bourbon is an American whiskey made from a mash bill of at least 51% corn and aged in new, charred oak barrels. It is primarily produced in Kentucky, but can be made anywhere in the United States. The whiskey is distilled to no more than 160 proof and bottled at no less than 80 proof. Bourbon has a distinct flavor profile, often characterized by notes of vanilla, caramel, and oak, and is known for its smooth, balanced character. It is often enjoyed neat or on the rocks, but is also a popular ingredient in cocktails.