Even after 20 years, rum-maker Cesar Marti feels the same pleasure each morning when entering his distillery in Santo Domingo, Cuba, where he is preserving a century-old tradition. Cuban rum is unique since it is entirely made from molasses, followed by a short period of fermentation and discontinuous distillation, which produces the sweet-tasting product the Caribbean island is known for. The tradition was recently added to UNESCO's intangible cultural heritage list.