Mayo's OK but not on burgers. That even sounds awful. That said, however, I wouldn't go by my tastes because I love Peanut Butter/Strawberry Preserves/sliced tomato sandwiches with toasted bread. So that is how much I know about culinary things. BTW, in the event that someone is ready to tell me how gross that is, if you eat snails, oysters or clams please refrain from criticizing my choices.