Olive oil, the only edible oil made from a fruit instead of a nut or seed, is the finest, most highly prized and frequently used of all oils, appreciated for its digestibility and its healthful effect on cholesterol levels. Extra virgin, the ultimate oil, is produced from the choicest olives, with no preservatives added, and has a maximum of one percent acidity. Liohori, a product of Crete, is an extra virgin olive oil that has a fresh fruit flavor and a golden green color.