What Is A Peanut Butter And Mayo Sandwich Called?
What Is A Peanut Butter And Mayo Sandwich Called? 59 Comments. There is a sandwich called the PB&M. In its most classic iteration, it’s made with peanut butter and mayonnaise on white bread. Why do people eat peanut butter and mayo sandwiches? Everyone was eating them well into the 1960s, and part of the reason