Whiskey is then aged in charred American white oak barrels. July 10, 2014 by Matt ThomasWhiskey is then aged in charred American white oak barrels. Stranahan’s Distillery Tour About Matt Thomas Matt is an avid writer and explorer, who loves to showcase his home state of Colorado. His favorite place to be is right here in the Centennial State. Previous Post:Whiskey is then aged in charred American white oak barrels.