Following distillation, Ron Zacapa XO Solera Gran Reserva Especial is solera-aged through a series of casks that were previously used to mature bourbon, sherry and Pedro Ximenez wine. Solera aging is a process that has generally been reserved for aging cognacs, ports and sherries. It involves filling a series of casks at different intervals over a long period of time. As rum from the oldest cask is emptied and bottled, the cask is re-filled with an equivalent amount of rum from the second-oldest cask in the solera. This cascading effect continues until the youngest cask in the solera is filled with new rum. As a result, no cask in the solera is ever fully emptied. In addition, as the younger rum cascades through the solera, its average age and complexity gradually increases over time.Ron Zacapa XO is crafted from a marriage of rums that have been solera-aged and are up to twenty-five years old. In addition, the rum is finished in French oak barrels that were previously used to mature cognac. As a result, the rum has an intense mahogany color, along with an aroma of leather, burnt caramel, roasted nuts and orange zest. The aroma gives way to notes of tobacco, cherries, chocolate, dates and figs on the palate, and leads to a long, semi-sweet finish accented by notes of raisins, vanilla and cinnamon.Ron Zacapa XO was named one of the Top 10 Spirits of the Year byGayot, and was named the Best Sipping Rum byGear Patrol. In addition, it was named one of the Ten Best Choices for National Rum Day byForbes.