Pure Kentucky XO Straight Bourbon needs to be uncorked overnight and allowed to sit out for three months after recorking. Otherwise, there is a metallic taste in the flavor. Then the senses will detect exotic aromas of caramel, oak, pipe tobacco, and baking spices. The entry is sweet with a palate of charred oak and cinnamon. The finish ends with allspice, cinnamon, pipe tobacco, and vanilla.