EVOO is the bomb. I've found canola is good for deep frying.If you just toss them together, of course they are. There is a bit of an art to mayonnaise making. And you might want to try a more neutral oil For the most part EVOO is my go to favorite. But for Asian cooking or if I ever deep fry, which is very rare, you need something else. A neutral high smoke point oil of some sort.