No. 3 Pot Still The copper pot stills were brought to Diplomatico's la Miel distillery in 1959. This discontinuous distillation system was originally used in Scotland to produce whisky. The copper pot still rum is produced from the best sugar cane honeys. The distillate is then aged in small American white oak barrels until it reaches optimum maturity, resulting in a complex and delicious spirit. This copper pot still rum is at the heart of Diplomatico's unique taste profile.