Oprah Great White Truffle Hunter

10/16/2014 12:02 AM PDT
TMZ TV

Oprah flew all the way to Italy to search for the world’s most expensive, and perhaps over hyped fungus -- yes, we're talking white truffles! Go ahead and lose your mind, everyone.

Important side issue: What the hell are white truffles?

If you don't know (you're not alone) ... watch this for a quick lesson -- and also to see Oprah’s ass.