And, despite what your mother may have told you, mayonnaise does not increase the chances of food poisoning. In fact, commercially prepared mayonnaise actually contains ingredients that protect against bacteria. It’s homemade mayonnaise recipes using unpastuerized eggs that gave birth to the myth that mayonnaise causes food poisoning...

I find that interesting because twice in my life I've been at picnics where salads with regular old jarred mayo sat out for a long time and the next day a whole slew of folks (all of whom had eaten a salad late in the day) were sick.

Christina