The name of this truffle derives from the hook shape that the spores have. Due to its characteristics, it is very similar to the black summer truffle, so much so that some classify it as one of its varieties. To know more It is a large truffle that varies from an egg to an orange, sometimes even exceeding 10 cm in diameter. The peridium is black with flattened pyramidal warts. The gleba is initially whitish then hazel and finally brown with dense, slender and whitish veins. The smell is reminiscent of hazelnuts and is more pleasant and intense than that of the black summer truffle to which it closely resembles. The harvest period is from September to December although it is possible to find it almost all year round. It is a common truffle in Italy and France. In our country it is frequent especially in the center.