Still too thick for the picky diner. Annoyed, Crum makes the next batch with a little attitude, slicing the potatoes so thin, the crispy things can’t possibly be picked up with a fork. Surprise: the wafer-thin fried potatoes are a hit. Traveling salesman Herman Lay sold them out of the trunk of his car before founding Lay’s Potato Chips, the first nationally marketed brand. Lay’s would ultimately merge in 1961 with Frito to create the snack behemoth Frito-Lay.
