Cappy, I totally agree with u about buying organic food instead and not going to restaurants.. Though at times u need to so why not to know the restaurant where they serve (quite) safe food?
Tip: I do not know u are a man or a woman but just flirt ith a weiter or weitress (get friendly) and may be next time u will get more hints about their food making stuff. Or have just a friend/ pal in one of the restaurants and then u can dine only there coz u will get all the info about their food. Was just a thought. :)