Solera is a stack of barrels where a small portion of whiskey is removed periodically and new whiskey is added. No barrel is ever fully emptied, and age and complexity gradually increase over time. Hillrock marries small barrel-aged Hillrock Estate Bourbon with mature seed bourbon before finishing in 20 year-old Oloroso Sherry casks to balance flavors and add layers of complexity. The resulting spirit offers a pronounced nose of caramel, dried fruit, vanilla, oak and spice, accentuated by an elegant floral note. The full-bodied palate opens with rich notes of brown sugar, molasses and toffee, followed by roasted corn, clove, cinnamon and a touch of spicy rye. Oloroso Sherry notes of walnut, fig and candied fruit merge with caramel and butterscotch on the long, balanced finish.