Daily Mail | It IS safe to eat food fried in olive oil: Scientists put an end to confusion as they conclude it is the best choice Daily Mail Olive oil, produced by pressing olives, is commonly used across the world in food preparation, whether for frying, drizzling or as a part of a salad dressing. It is therefore classed as a vegetable oil, as it is produced from vegetable matter, as ... Olive oil labelling slips through net |