Olive oil is very different from other vegatable oil in that it is mostly monounsaturated. Olives do need to be cured, and honestly they might not have been con

Olive oil is very different from other vegatable oil in that it is mostly monounsaturated. Olives do need to be cured, and honestly they might not have been consumed until somewhat recently: >The cultivated olive seems to have coexisted with humans for about 5,000 to 6,000 years, going back to the early Bronze Age (3150 to 1200 BC). For thousands of years olives were grown primarily for lamp oil, with little regard for culinary flavor. In the case of rapeseed: >Rapeseed oil is one of the oldest known vegetable oils, but historically was used in limited quantities due to high levels of erucic acid, which is damaging to cardiac muscle of animals, and glucosinolates, which made it less nutritious in animal feed.[19] Rapeseed oil can contain up to 54% erucic acid.