Because of its huge shape, it is also called truffle, which belongs to truffle genus of Truffle family and is closest to Morchella.

Truffles mainly grow in the soil of 40 cm to 1 m, so the aroma is easier to preserve than other fungi. Truffles look really ugly, look like briquettes, and have a long smell.

More than 100 kinds of truffles have been found all over the world, and their shapes and smells are slightly different. Truffles appearing on restaurant menus and shelves of luxury food suppliers account for only a small part of truffles in the world. The most sought after and precious are Italian white truffles and French black truffles, which are mainly distributed in Piedmont, Provence and Sala, China, Yunnan and Sichuan.

The reasons why black truffles are unpalatable are called three kinds of delicacies: high price, scarce output and strange smell. The annual output of black truffles is less than 200 tons, and the growth environment of truffles is very special. Finding it is not a simple matter, and getting it is even more difficult.

Why are truffles called one of the three great foods in the world? Truffle _ a very precious fungus, which can emit a special smell. Truffles may take 5 to 10 years to harvest, otherwise they will not grow at all. Truffles can only coexist with other plants to absorb nutrients, and _ one of the few fungi growing underground, which makes it very difficult to cultivate truffles artificially and its own output is very small. Truffles are hard to find with the naked eye. At present, picking mainly depends on hounds, and the picking cost is very high. Truffles have high nutritional value and are rich in protein, amino acids, vitamins and trace elements.