Non-distilling producer Jefferson’s Bourbon, in recent times, has been moving well beyond the boundaries of just buying bourbon from others and immediately rebottling it under their brand. We’ve seen some interesting projects emerge from the mind of founder Trey Zoeller, be it Cabernet cask finishing, river boat aging or exposure to aging in different environments. Now Jefferson’s has returned to cask finishing yet again, unveiling its new Jefferson’s Reserve Old Rum Cask Finish.

Jefferson’s Reserve Old Rum Cask Finish, according to those behind the brand, took Kentucky straight bourbon that was originally aged for eight years and, in 2014, dumped…