Some things just go together—peanut butter and jelly, cheese and crackers, chocolate and mayonnaise. Wait, what? You don’t yet know about how awesome chocolate mayonnaise cake is? If you’re not familiar with it, it’s a wonderfully moist chocolate cake that was created, according to food legend, by the wife of a Hellman’s mayonnaise salesman to help increase his sales. Although it may seem like an odd ingredient, the mayonnaise in this cake actually replaces the vegetable oil that’s typically called for.