The white summer trufflesTuber Aestivum, commonly known as white summer truffle or St John's truffle. It is part of the family of tuberaceae in the class of ascomycetes. This fungus is thypoge and lives in symbiosis with a tree (oak, hazel, pine, linden ...). It is therefore mycorrhizal, which means that it needs a host tree, and saprophyte, because it feeds on organic matter from decaying plants.
This truffle is present most of our territory and on many countries in Europe. We find it on plots cultivated in aestivum, on the old plots of tuber melanosporum and in the wild, in abandoned plots or woods and copses, on calcareous and clay soils. This spherical tubercle, oblong, brown-black in color, presents on its surface prominent, prism-like or pyramidal warts. The outer appearance of this truffle closely resembles melanosporum. When you look at the flesh (glèba) it is white - cream to brown, veined with white. Do not confuse it with the White Truffle of Italy by its real name: Magnatum pico which has a smooth peridium and price is very high. In summer this truffle is very nice grated or slice, thick enough to enjoy the crunchiness on a salad or pasta.
The Gleba (the flesh of the truffle) is beige to brown, more or less yellowish for the mature truffles. Not mature, the flesh is clear or white. It has a pleasant delicate aroma of wild mushrooms.
The white summer truffle is very close to the truffle of Burgundy Tuber uncinatum. No difference has been demonstrated by molecular biology techniques. However, according to interprofessional agreement taken within the framework of the French federation of truffle farmers in 1996 (updated in 2006), classifies these truffles as parent but not identical. It differt only according to the maturation dates. From May 15th to September for Tuber aestivum, and from September 15 to the end of January for Tuber uncinatum. The lighter color of the gleba de Tuber aestivum et darker than that of Tuber uncinatum. The weak flavor in the first. More marked in the second.
- Origin of the product: The truffles come from the exploitation, wild environments and (or) suppliers of our region, Quercy Blanc. Lot and borderingareas.