Olive oil, a pillar of the Mediterranean diet, is expanding globally, but the differences between its types and quality generate doubts. Extra Virgin Olive Oil (EVOO) guarantees maximum quality, obtained from healthy olives, processed under strict standards and without additives. Other types, such as mild and intense olive oil, may be blends of refined oils, lacking healthy benefits. EVOO and Virgin Olive Oil share the same extraction process, but differ in composition and taste due to different factors.