Hillrock Solera Aged Bourbon is the first American whiskey to be aged in the centuries-old Solera method used traditionally to create exceptional Sherries, Ports, Madeiras, and Cognacs. Recognized internationally, the award winning whiskey is finished in 20 year old Oloroso Sherry casks which give the Bourbon floral notes layered with fig, roasted walnuts, candied fruit and spicy rye.