Olive oil is the edible oil expressed from the sound, mature fruit of the olive tree.
Other vegetable oils should be labeled by their common or usual names, such as cottonseed, sunflower, peanut, and sesame. Mixtures of edible oils should be labeled to show all the oils present and the names should be listed on the labels in the descending order of predominance in the product. Pictures, designs, or statements on the labeling must not be misleading as to the kind or amount of oils present or as to their origin. Its value as a food whether intended for human or animal use depends mainly on its vitamin D content. Articles offered for entry as cod liver oil must comply with the identity standard prescribed by the USP and conform to the other specifications set forth in that official compendium.