Rum part of this blending process, light rums may be filtered to remove any colour gained during ageing. For darker rums, caramel may be added to adjust the colour of the final product. Artificial ageing attempts to match the molecular composition of aged rum using heat and light. Besides rum punches, cocktails such as the Cuba libre and daiquiri have well-known stories of their invention in the Caribbean. Tiki culture in the U.S. helped expand rum's horizons with inventions such as the mai tai and zombie. Other well-known cocktails containing rum include the piña colada, a drink made popular in America
Ita Mai Tai gravelstone and coquina. In drill cores of the summit region the limestone reaches a thickness of and the mud of ; the mud formed in lagoonal settings. Terrigenous rocks have also been encountered within the limestones. Guyots such as Ita Mai Tai often accumulate ferromanganese crusts. These are generated by the oxidative precipitation of manganese salts which also include iron and absorb trace elements such as cobalt, copper, molybdenum, nickel, platin, rare earth elements and zinc from the water through as-yet unknown processes. In the case of Ita Mai Tai these crusts have been found all over the seamount and