"High nicotine concentrations were found in wild mushrooms -- mainly porcini mushrooms (Boletus edulis), but also truffles and chanterelles -- of various origins, although most of them came from China."The European Food Safety Authority said it was unclear why nicotine, an alkaloid that occurs in tobacco, was showing up in mushrooms. They speculated, "it could be pesticide use."
"In European countries, the use of plant protection products containing nicotine as an insecticide will be phased out by the latest in June 2010, but its use in other countries may continue and may lead to residues of nicotine in food, the agency said."I suppose this isn't something we can wash off?