Maestro Gran Reserva is categorized as part of the Gran Reserva line along with Bacardi 8. It is a double aged rum bottled at 40% ABV. Mellowed for one year in American white oak, blended, and placed into aging again for another 3 months. A more robust nose and body, meant to stand out in a cocktail.
Camper English walks through a Bacardi press release and a follow-up question on the multitude of Bacardi white rums. Maybe I'll give the Maestro Gran Reserva a shot. I have no time for standard Bacardi Superior, but I enjoy Bacardi 8, which the Gran Reserva is positioned beside.