Truffle is underground tuberous fungus that is considered to be the height of gastronomy. It grows in the heart of Istria, in a humid and grey soil of the forests near Buzet with the Mirna River running through it. This hidden treasure can be located by means of specially trained dogs.

The area where truffles may be found is located southwest from Buzet and Lanišće all the way to the Raša River in the area of Labin and on the southern area to Pazin.

In the valley of the Mirna River one can find the internationally much appreciated white truffles that mature in early fall, as well as black truffles which can be found both in winter and in summer.