American whiskey labeled as one of these types, the whiskey must be distilled to no more than 80% alcohol by volume (160 U.S. proof) to ensure the flavor of the original mash is adequately retained, and the addition of coloring, caramel, or other flavoring additives is prohibited. All of these, except corn whiskey, must be aged at least briefly (although no minimum aging period is specified) in charred new oak containers. These restrictions do not exist for some similarly named products in some other countries, such as Canada. American corn whiskey does not have to be aged at all – but, if
Stranahan's Colorado Whiskey countries until 2010, when Proximo decided to scale down sales to mostly the Colorado area, maintaining the whiskey's availability in its home state. Since 2011, Rob Dietrich has served as Stranahan's head distiller, after taking over from original head distiller Jake Norris. Stranahan's is a straight whiskey, aged in new charred oak barrels, like bourbon, with the final whiskey a blend of 2, 3 and 5 year-old whiskeys. It is distilled from a 100% malt barley base grain, with four barleys sourced from the Colorado area, and water sourced from the Eldorado spring outside Boulder. Stranahan's initially used wash from