Refined olive oil and mixed olive oil. Olive oil can be divided into virgin olive oil, refined olive oil and mixed olive oil, among which refined olive oil is made by refining process, with higher purity, but more nutrients are lost; The mixed olive oil is made of virgin olive oil mixed with refined olive oil, and its nutritional quality lies between the two. Because the nutrients in refined olive oil and mixed olive oil have been destroyed, and the smoke point is higher, it is ok to cook with them at high temperature, that is to say, these two kinds of olive oil can be used for cooking.