Production: first resting for five years in the Caribbean, then for three more at the Williams & Humbert facilities in casks which have aged "Dos Cortados” (Palo Cortado), Dos Maderas 5+3 rum once finished then undergoes a third stage of ageing in butts which have previously aged "Don Guido" sherry (Pedro Ximénez) for 20 years, thus giving origin to the extraordinary Dos Maderas PX rum. Both "Don Guido“ and "Dos Cortados" have been aged for 20 years as certified by the oldest Denomination of Origin in Spain: that of Jerez-Xérès-Sherry.