Black Cask Bourbon Tea A Smoky Blend with Light Caramel Flavors Download Black Button Distilling Cask Strength Bourbon Wallpaper Black Cask Bourbon Black Cask Bourbon Loose 4 oz. Tin Black tea, Harney & sons, Cask. With our new Black Cask Bourbon, we set out to combine the full body and intense aromas of black tea with the rich flavors of finely aged bourbon. The result is simple and stunning: prominent bourbon notes of vanilla, caramel, and smoky oak cask layered atop a smoky black tea base. Perfect for sipping slow and steady, as a bourbon should be.