here in italy we know well what i m talking about, but i know that abroad is very easy to be fooled cause of many " smart businessmen".
everybody know the excellene of italian products in different fields; extra virgin olive oil is one of them.
i m laughing reading a comment from a spanish gentleman saying here in italy we have black olives to make olive oil

here....in our regions we always warn tourists saying that what they buy in their countries with italian names, is not italian extra virgin olive oil produced in italy,but just bottled in italy, and this make the produtct not so good as an italian one...and u know why? cause is mixed with spanish, greek, turk oil: just the name is italian,
so as you see, some businessmen take spanish and greek oil that is cheaper for quality process and taste and sell it abroad.
sure spanish oil in the last 6 years is much spreaded in countries as uk, but just cause the quality is still good and the price is very convenient:
you should try to come to extra virgin oil boutiques in italy...to taste what i mean: such oil, produced completely in our region factories can cost even 45 euros per litre.
of course we have even more convenient ones: just don t forget that if you re talking of quality, never say spain instead of italy:
have u ever ate a pizza in spain? what a shame, happy ignorance.
every country has its own best, even spain and greece, but not for olive oil, wine and so on