" bottling the truffle has become big business. In May, four class-action lawsuits filed in New York and California accused Trader Joe’s, Urbani Truffles, Sabatino and Monini of fraud of “false, misleading, and deceptive misbranding” of its truffle oil products. If you look at the labels of these brands’ truffle oils, you’ll find that the ingredients include truffle “aroma” or “flavor” or “essence.” That’s the chemical 2,4-dithiapentane. Also known as bis (methylthio) methane, it supplies a fair imitation of the natural truffle smell."
source: NYTimes
https://www.nytimes.com/2017/09/15/o...chemicals.html