What's the difference between extra-virgin olive oil and virgin olive oil?
D004042:Dietary Fats, Unsaturated; D006863:Hydrogen-Ion Concentration; D000069463:Olive Oil; D010938:Plant Oils / Q000737:chemistry*; D013649:Taste
D004042:Dietary Fats, Unsaturated; D000069463:Olive Oil; D010938:Plant Oils