In the beautiful French region of Provence, winter is one of the most exciting times ofthe year, and nowhere is the excitement felt more than in the small village of Richerenches. From November to March, this usually sleepy town is energized as people spend their days either in the forest or at the busy market, selling what they have found. If you ask someone on the street or in the church what has everyone in a tizzy, he or she will likely answer, "Black diamonds." These aren't the glittering stones that can be set in a necklace, but mushrooms that grow underground and are one of the most expensive foods in the world-truffles.