In announcing the sale of Pringles on Tuesday, Procter & Gamble concluded what had been a tumultuous, sometimes zany, 50-year experiment in engineered food.

The $2.35 billion deal with Diamond Foods is also a milestone for Procter as it sheds its last food brand after having already sold Jif peanut butter, Folger’s coffee and Crisco shortening.

The company’s expertise in edible oils was used widely by the potato chip industry in the 1950s and 1960s, and shaped the invention of Pringles, the thinly sliced saddle-shaped crisp. Company officials still aren’t sure how the chips got their name, but one theory holds that two Procter advertising employees lived on Pringle Drive in Cincinnati and the name paired well with potato.

The creator of the famous Pringles can was so proud of his invention that he asked that his ashes be buried in one.