European white truffles can sell for as much as $3,600 a pound, making them and their fellow fungi the most expensive food in the world. One two-pound truffle recently sold for more than $300,000. All ...

Truffles are one the world's most expensive foods because they're rare and challenging to grow. Truffles are earthy and pungent, and a little goes a long way. Truffle-infused products typically don't ...