Whisky Nikka Yoichi Single Malt Rum Cask Wood Finish. For fans of the tropical influence of rum, Nikka brings you this wonderful, 2017 rum-finished Yoichi single malt. Only 3,500 bottles of this are available, and stock is expected to go quick. Available from November 2017. Caramel and orange chocolate meet the Yoichi smoke and powerful oak delivering a stellar balance, a rich, satisfying mouthfeel, and a long, long finish.