Gran Duque d'Alba XO is an ultra-premium Brandy de Jerez. It is similar to Gran Duque d'Alba Solera Gran Reserva, but aged for an average of 18 years. It is produced at the Williams & Humbert Bodega, in Jerez, Spain, using the traditional system of criaderas and solera. The brand was first launched in 1945 and named for the Grand Duke of Alba, Fernando lvarez de Toledo y Pimentel. It is aged in American Oak casks that previously held Don Guido sherry, and has an intense nose with notes of vanilla, raisin and plum. Best served at room temperature and excellent for special occasions.