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Caesar salad is served at Carbone restaurant in New York, U.S., on Tuesday, April 23, 2013. The ingredients include parmesan-slicked lettuce, anchovy fillets and buttery croutons. Photographer: Philip Lewis/Bloomberg via Getty Images

Caesar salad is served at Carbone restaurant in New York, U.S., on Tuesday, April 23, 2013. The ingredients include parmesan-slicked lettuce, anchovy fillets and buttery croutons. Photographer: Philip Lewis/Bloomberg via Getty Images