This winter truffle variety ripens from December to late March. Its peridium (skin) is warty, matte black, and warts are not very prominent. The shape is depressed at the top, and the colour is reddish at the base.
The pulp is purple-black crossed by numerous thin white veins that become black after sterilisation.
Only the best truffles of this variety are part of this category. They have very rounded, nearly spherical, shape with a stable mature pulp. They have no external defects, only very small cuts in the skin in order to show the quality of their pulp.
This is the most available selection in nature. Truffles have a regular and rounded shape and may have very slight aesthetic defects, such as scratches, cuts, etc.
The quality of the pulp does not differ from the previous selection.
Selections of whole truffles regular in shape with the presence of possible lobes.
The surface may have small scratched portions.
The pulp is qualitatively like the previous and superior selections.
Truffles broken during harvesting, washing, or properly cut, are included in this category. Their pulp, as for the other categories, has no maturation defects.