Extra Virgin Olive Oil is a type of virgin olive oil. It is produced from olives, solely by mechanical processes, under specific temperature requirements, that do not lead to its alteration or deterioration. Any treatment other than washing, decantation, centrifugation or filtration is not acceptable. It is always cold extracted (using a centrifugal or percolation process) or cold pressed (using a hydraulic press process). Extra Virgin Olive Oil must pass a wide range of chemical tests, including one for maximum acidity, in terms of oleic free fatty acid of not more than 0.8 percent; and, the oil must be defect-free with olive fruitiness, according to a blind sensory evaluation by certified olive oil taste panel experts.
Virgin Olive Oil has the same requirements as Extra Virgin; however, its free acidity cannot be more than 2 percent and there may be minor defects.
Olive Oil is a blend of refined and Extra Virgin or Virgin Olive Oil. Refined means that defects, found in the base oil, are removed by charcoal or other chemical and physical filters
So now you know... bet you wish you'd never brought it up