All whiskey starts from a base of grains, often called a mash bill. A myriad of requirements dictate how different styles of whiskey are to be made. These range from where a product is distilled and aged to what types of barrels are allowed, among many other steps in between. But each type of whiskey, regardless of style, has to be produced from grain(s).

For example, single malt is required to be 100% malted barley (in Ireland and Scotland anyway). For bourbon production, in addition to only being produced in the United States…