In some elements of Europe, truffle hunting is a extremely regulated trade, and the gatherers have to be licensed and have skilled truffle canines. ’s run by a French and Japanese couple and they've a cafe next door too. And even when you do get your palms on them, they've a very quick shelf life.After just 5 days, the pungent truffle smell may have halved. Fresh, raw truffles have a very short shelf life and have to be eaten within two to three days. The cheaper truffle oils have been created to mimic the scent and taste of truffles with out actually containing truffles.