In some components of Europe, truffle looking is a highly regulated trade, and the gatherers need to be licensed and have trained truffle dogs. ’s run by a French and Japanese couple and they've a cafe next door too. And even whenever you do get your arms 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 really short shelf life and need to be eaten inside two to three days. The cheaper truffle oils have been created to mimic the odor and taste of truffles with out really containing truffles.