 Originally a 19th-century slang term for whiskey, especially Highland Scotch whiskey, the Mountain Dew name was trademarked for the soft drink in 1948.Charles Gordon, who had partnered with William Swartz to bottle and promote Dr. Enuf, was introduced to Mountain Dew when he met the Hartman brothers on a train and they offered him a sample.Gordon and the Hartman brothers subsequently made a deal to bottle Mountain Dew by the Tri-Cities Beverage Corporation in Johnson City, Tennessee.