There was a time when peanut butter and jelly, spread generously on two simple slices of bread, was a quintessential American meal. But sometimes a great rise can also mean a great fall. And the mighty PB&J has fallen. By the twenty-first century, historian Steve Estes writes, “the PB&J had gone from a symbol of doting mothers and idyllic childhood to a marker of negligent parenting and unhealthy kids.” What took the sandwich from iconic to outdated?