Truffles are mushrooms that grow underground.
More particularly, truffles are fruitful bodies with the shape of a tuber, more or less rounded, more or less rich with protuberances and cavities. They consist of an outer layer, called peridium, which may be either smooth or wrinkled, and of an inner “meaty” mass, called gleba.
Just like mushrooms, truffles live in symbiosis with trees, from which they get their nourishment, in return giving them water and minerals.
An ancient legend tells that truffles are generated by thunder and lightning (this gave origin to the image that represents our company, Hermes’s lightning bolt), and the scientific truth is not too far off. Lightning usually strikes trees very rich in water, such as oaks, the favourite tree of truffles.