I’ve heard that the imported oils are actually filled with synthetic chemicals. Is this true?
Over the past 7 years it has come out that imported truffle oils are made with synthesized gases such as 2,4-dithiapentane which is a naturally occurring gas in truffles. As truffles rose steadily in price it seemed a good idea to isolate and identify the gases most responsible for the characteristic odor of truffles, then make them from scratch in a laboratory. Voila! Instant truffle oil! Actually I think the product is very good and to most chefs it is the essence of real truffles. The problem is that the characteristic odor of truffles comes from at least 30 different gases so that the synthetic version, while strong, lacks complexity.