Tuber borchii

Tuber borchii, commonly known as the bianchetto or whitish truffle, is an edible ascomycete fungus prized in Italian cuisine. It should not be confused with the true Italian white truffle (Tuber magnatum), which is more valuable. T. borchii forms an irregular, pale cream to ochre underground fruiting body and grows in symbiotic (ectomycorrhizal) association with the roots of host trees such as oaks, hazels, pines and poplars, primarily in temperate regions of Europe, especially Italy.

History

Tuber borchii has long been gathered and used as a flavouring truffle in Italy, where it is locally cultivated. The genus name Tuber derives from the Latin for "swelling" or "tuber," reflecting the underground, knobby fruiting body. Although less famous than the Alba white truffle (Tuber magnatum) or the Perigord black truffle (Tuber melanosporum), it has attracted growing scientific interest, and it was among the first truffle species for which fruiting was achieved from seedlings inoculated with pure mycelial cultures.

Overview

As an ectomycorrhizal fungus, Tuber borchii forms a mutually beneficial relationship with its host trees, aiding their nutrient and water uptake while drawing carbon from the plant. It is one of the truffle species that can be cultivated, typically by raising host seedlings inoculated with truffle spores or mycelium. Its aroma is notably pungent and sulfurous, dominated by volatile sulfur compounds, and it is consumed in small quantities as a culinary seasoning rather than as a bulk food.