Truffles are fungi that grow deep underground and are highly valued all around the world for their dense, creamy texture and pleasant nutty flavor. And when we say highly valued, we really mean it, as just one pound of European white truffles can cost you $3,600, which makes these fungi the most expensive food in the world. Believe it or not, one two-pound truffle was recently sold for over $300,000! But why are people willing to pay such a seriously steep price for these mushrooms? Find out in the video below.