Olive oil is the unique and necessary item of the Mediterranean cuisine, and also of course for Turkish cuisine, especially in the western coasts of Turkey.
The olive oil world is of a big veriety of kinds; but there are three main types of it. Virgin olive oil, refined olive oil, and pure olive oil. (Pure olive oil is also called as 'riviera'.
These three types also have some sub-types, like extra virgin, or ordinary virgin etc.