The truffle grows spontaneously in all Italian regions and is celebrated in several gastronomic traditions, but only some regions have developed a system of fairs and festivals to celebrate it.
Piedmont and Umbria are the Italian regions where the truffles culture is traditionally more developed.
Piedmont is the only region where truffles hunting at night is allowed, because the dog is less disturbed and, by ancient tradition, because the darkness protects the “trifolau” from curious eyes.