Cuban rum master Cesar Marti tests the density of one of the rums he makes, at the Central Rum Factory in the town of Santo Domingo, Villa Clara Province, some 270 kilometres southeast of Havana, Cuba, on March 8, 2023. - Marti has spent the last 20 years preserving a century-old tradition that was recently declared an intangible cultural heritage by UNESCO. Cuban rum is unique since it is entirely made from molasses, the viscous residue produced by refining sugarcane, followed by a short period of fermentation and discontinuous distillation, which produces the light rum the island is known for. (Photo by Adalberto ROQUE / AFP)