I have turned up my nose at this cake for years. Who in their right mind would bake a perfectly good chocolate cake with mayonnaise? Mayonnaise goes on a great hamburger, in Southern pimento cheese or in your best chicken salad, but a cake no way! After making Mayonnaise Rolls for my students I had a lot of mayo left over and decided after being bombarded with the advertisment for this cake that I would actually try it. Tell me that ads don’t have power over the mind because that’s the only reason I tried the recipe. Who can resist the way the cake looks in the ad just so mouthwatering and moist! So here is the lowdown on the mayonnaise cake.