Top chefs, including Rocco DiSpirito, Sylvain Portay, Michael Smith and Debbie Gold, and Christian Delouvrier, order winter (tuber melanosporum), summer (tuber aestivum) and white truffles from Plantin, a company based in France since 1930. Hervé Poron is the owner/buyer and prides himself on picking the best truffles in the country. They also sell dried morels, porcini and black trumpets.