The truffle has been renowned since Antiquity, notably for its aphrodisiac qualities. It graced the table of kings and the great Arab physician Avicenna recommended it to his patients. But this fungus, highly appreciated by gourmets and which grows at the root of trees, remains something of a mystery. To find out more, we head to Lalbenque, home to the 'black diamond' truffle, near Cahors in France’s Lot region.
