American whiskey is a diverse category of distilled spirits crafted in the United States, known for its rich history and distinct regional styles. The prominent subtypes include Bourbon, which must be made from at least 51% corn and aged in new charred oak barrels; Rye, which relies on a majority of rye grain for its mash bill; and Tennessee whiskey, distinguished by its charcoal filtering process known as the Lincoln County Process, notably used in the production of Jack Daniel's. With a range of flavors and production techniques, American whiskey stands as a testament to the country's whiskey-making heritage and innovation.