Is it safe to take foods prepared with mayonnaise on picnics and cook-outs? Mayonnaise is NOT a food safety problem! Many of the foods that are typically used with mayonnaise, such as chicken, ham, or potatoes, are much more susceptible to bacterial growth than mayonnaise itself. The ingredients in mayonnaise such as vinegar, lemon juice and salt create an unfavorable environment for bacteria that will slow or prevent its growth. We recommend the following to keep picnic food safe: - Chill well before packing - Carry to the picnic or cook-out in an insulated container - Keep out of direct sunlight - Discard leftover picnic food immediately rather than carrying home to serve later GO BACK