Bourbon Whisky must contain a minimum of 51% corn, be produced in the United States, be distilled at less than 80% ABV (160 proof) and be aged in new charred oak barrels; 'straight' bourbon must be aged for a minimum of two years, although in practice virtually all straight whiskies are aged at least four years. Any bourbon, or any other domestic or imported whiskey, for that matter, that has been aged less than four years must contain an age statement on the label. Infused Straight Bourbon Whiskey fulfills the above requirements while being flavored without any sugar or artificial additives and bottled at 40% ABV (80 proof) or higher.