Tuber gibbosum

Tuber gibbosum, commonly known as the Gibbosum truffle or the Hunchback Black Truffle, is a species of truffle belonging to the Tuber genus. It is found primarily in Europe, particularly in areas with calcareous soils and associated with hardwood trees such as oak and hazel.

The Tuber gibbosum truffle is characterized by its irregular, often knobby shape, giving it the appearance of being hunched or gibbous, which is reflected in its scientific name. Its outer surface, or peridium, is typically black or dark brown with small warts. The internal flesh, or gleba, is typically a dark brown or greyish-brown color, marbled with white veins that become more pronounced as the truffle matures.

The aroma of Tuber gibbosum is generally described as strong and earthy, with hints of hazelnut and a slightly pungent note. While considered edible, Tuber gibbosum is generally regarded as being less commercially valuable and less flavorful than other truffle species such as Tuber melanosporum (the Perigord black truffle) or Tuber magnatum (the white truffle).

Its fruiting season typically occurs during the autumn and winter months. Like other truffle species, Tuber gibbosum forms a symbiotic relationship with the roots of host trees, providing them with water and nutrients in exchange for carbohydrates produced through photosynthesis. This symbiotic association is crucial for the truffle's survival and propagation.

Harvesting of Tuber gibbosum typically involves the use of trained dogs or pigs to locate the truffles underground, as their aroma is detectable even through the soil. Due to its lower market value, it is often used in more casual culinary applications compared to more prized truffle varieties. Its uses include flavoring oils, sauces, and being shaved over pasta or other dishes to impart its distinctive truffle aroma.