Cask Strength. Part three of the Bootleg Series by Heaven’s Door. Named after Bob Dylan’s famous “Bootleg Series” of albums, the line-up invites you to experience the art of craft whiskey on a new level. This rare whiskey has been matured in oak for 13 years. After ageing in Virgin American oak casks, the whiskey was transferred into Vino de Naranja casks. Each offering in this collection of unique and unreleased whiskies features one of Dylan’s paintings on a hand-made ceramic bottle and presented in a collectable leather case.