At the end of each year, it's white truffle (magnatum) season in Europe. You may know that the mighty magnatum remain the gift of Mother Nature - they occur in wild forests only. Unlike black truffles (melanosporum) human beings have not yet managed to cultivate magnatum.
Our friend Zac at Wiltshire Truffles has nailed the truth in this worthy piece - very few of the best magnatum come from Italy. The great majority come from the pristine forests of Hungary and Croatia (Istrian Peninsula), Serbia and even northern Greece. Our experience is that many of the white truffles said to be from Italy are actually from their eastern neighbours.