Is it ok to eat an olive olive oil or olive juice?

olives have olive oil because they make olive oil Yes. Olive oil is produced by squeezing the olives (the term - and process - is actually "pressing").

None.

You can use it a few months after the expiration date, especially if it is used for cooking. Also you can tell if it is too bad by the smell, it will smell awful.

It comes from any type of raw olive they press them.

Extra Virgin Olive Oil has the strongest flavor ( first pressing) and is a darker oil. The lighter the color of olive oil, the less flavor .