The Scottish and Irish distillers emigrated to the America, and brought with them distillation. American spirits tend to be a little rough around the edges and we love them. Due to the warmer climes, they tend to mature much faster, thus there are few much older than their early twenties. Wheat whiskey is an American whiskey that differs from bourbon in the mash bill. It is distilled from a minimum of 51% wheat, offering a sweet, mellow character.