Black Truffle

Bianchetto (Tuber borchii)

Synonyms

  • White Truffle
  • Summer White Truffle
  • White Spring Truffles

Description

Distribution

Tuber borchii fruits throughout Europe and can be found in various locations including Finland, Sicily, Ireland, Hungary, and Poland. They favor well drained sandy limestone soils but can also grow in areas where black truffles (Tuber melanosporum) are found. Pine trees are good host trees for the bianchetto truffle.

Soil diagram showing the natural range of soil types for the Tuber borchii which include sandy soils.
Soil diagram showing the natural range of soil types for the Tuber borchii. Morcillo et al. 2015

Bianchetto truffles maybe easier to farm as they are naturally found in soil with a wider soil types and pH range than T. melanosporum. Bianchetto can be found in very sandy soils with pH ranging from 4.5 to 8.5 with an optimum of 7.8 (Morcillo et al. 2015). The Bianchetto truffle is successfully farmed beyond its natural range in Australia, New Zealand and the USA (California and North Carolina).

Graphic showing the ideal soil pH levels for Tuber melanosporum, Tuber aestivum and Tuber borchii farming. Tuber melanosporum can be farmed between pH of 7 and 8.5 with an optimum pH of 7.8.
Optimal soil pH ranges for cultivation of Tuber melanosporum, T. aestivum, and T. borchii. The size of the teardrop indicates the range in soil pH in which production can occur while the optimum pH is indicated by the number in the center of the teardrop. Figure courtesy of Micologia. Source: Morcillo et al. 2015

North American Presence

Tuber borchii is actively cultivated in North America. A few distributors import it fresh from Europe.

  • California
    (Farmed, Experimentally Farmed)
  • North Carolina
    (Farmed)
  • Oregon
    (Farmed)

Seasons

January to April in the Northern hemisphere

Spores

Mycorrhiza

Aroma, Flavor and Usage

Earthy, sharp, garlicky, and buttery

References

  • Morcillo, M., Sanchez, M. & Vilanova, X. (2015) Truffle Framing Today, a Comprehensive World Guide. Micologia

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