Truffle black underground

Black truffle (Tuber melanosporum), a highly prized subterranean fungus in gastronomy, found in symbiosis with oak and hazel tree roots.

About this subject

The black truffle, scientifically known as Tuber melanosporum, is a mycorrhizal fungus that grows exclusively underground, in symbiotic association with tree roots such as oaks, hazels, and beeches. This fungus is particularly prized for its intense aroma and earthy flavor, making it one of the most expensive and sought-after ingredients in haute cuisine worldwide.

The life cycle of the black truffle depends on specific soil and climate conditions. It thrives in well-drained calcareous soils with a pH between 7.5 and 8.5, and requires hot summers and cold winters typical of southern Europe. Major producing regions include Périgord in France, and the provinces of Alba and Molise in Italy, as well as areas in Spain and Croatia. Harvesting takes place between November and March, using trained dogs that locate ripe truffles by their strong smell.

Historically, truffles were harvested with sows, but dogs have become more common because they are easier to control. The commercial value of black truffles can exceed one thousand euros per kilogram, depending on the season and quality. This high price is due to rarity, difficulty of cultivation, and continuous demand from chefs and consumers. Although controlled cultivation attempts exist, most black truffles are still foraged in the wild.

In cooking, black truffle is used fresh, shaved over dishes like pasta, risotto, eggs, and meats, or processed into oils and preserves. Its aroma is volatile, so it is added at the end of preparation or raw. Black truffle also has a long cultural tradition, associated with luxury and sophistication since ancient Rome, when it was considered a gift from the gods.

Frequently Asked Questions

How are black truffles found?

Black truffles are located by trained dogs that sniff out the characteristic odor of ripe fungi. Pigs were used historically, but dogs are easier to handle.

What is the commercial value of a black truffle?

The price can range from 500 to over 1,500 euros per kilogram, depending on the season, size, and aroma. In years of scarcity, the value can be even higher.

Where does the black truffle grow naturally?

It grows in regions with calcareous soil and temperate climate, mainly in southern Europe, such as France (Périgord), Italy (Alba), Spain, and Croatia.