umit wrote:Virgin and extra-virgin olive oils are good for salads and cold dishes.
Quite so. I always thought the sensible thing was not to waste the "good" extra virgin oils into frying or cooking... unless indeed you live in a location where olive oil comes from your back garden!

Since "cheapest" does not always mean "sensible", and there's more than
one solution to almost any issue, this is what I do: I keep a few bottles/tins of olive oil in da house - one for cooking that involves heating, and some "better" quality for salads, etc.
It's interesting how different olive oils can be - you can "taste" them a bit like they were wines

But IMO the differences in quality or taste are not that significant when we talk about cooking or frying... if you're preparing coq au vin you do
not necessarily profit a lot taste-wise from pouring in that bottle of vintage Margaux; similarly, it makes little sense to use up that Ligurian extra vergine to appease the gods of Deep Frying.