Olive oil and vegetable oil, as mentioned before, are two popular oil varieties in the kitchen. The taste varies by region, altitude, time of harvest, process of extraction and other factors. Do not substitute olive oil for vegetable oil when: Making salads, pasta condiments, or sauces: Substituting vegetable oil in cold dishes or oil-based recipes (e.g Aglio e … Olive oil is the major distinguishing feature of the famous Mediterranean diet, one of the few world diets recognized scientifically to ward off disease, prevent weight gain, and promote longevity.Vegetable oil, on the other hand, has a bad rep and is considered to be a classic feature of the infamous western diet, with most fast-food chains using vegetable oil to fry food. Use olive oil for medium heat cooking, and use vegetable oils for high-temperature cooking. Its use dates back 6,000 years, originating in Iran, Syria, and Palestine, before making its way to the Mediterranean, where its olive groves are most well-known. Olive oil is a common cooking oil obtained from olives used all over the world, especially in the Mediterranean. Although olive oil and vegetable oil can be used for … Olive oil is oil pressed from olives. When it comes to taste, olive oil--especially extra virgin olive oil--has a much richer flavor profile than vegetable oil, and can enhance the flavor of everything you cook. Vegetable oils can be edible or non-edible. The study compared ten of the most commonly used oils and found that extra virgin olive oil is the most stable cooking oil. As the name implies, olive oil is made from the olive fruit and vegetable oil is made from vegetables. The ones used for cooking are mostly derived from one particular plant source or may be a blend of two or more oils.