A Cheez Whiz ad from 1952. Courtesy of Kraft Foods hide caption

toggle caption Courtesy of Kraft Foods

Henry J. Heinz Library of Congress hide caption

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Commemorative ketchup bottles with portraits of Warren Buffett are seen at the exhibition of Berkshire Hathaway companies at the annual meeting in Omaha, Neb., on May 3, 2014. Kraft Foods said it will merge with ketchup maker H.J. Heinz Co., owned by 3G Capital and Berkshire Hathaway Inc, to form the world's fifth-largest food and beverage company. Rick Wilking /Reuters /Landov hide caption

toggle caption Rick Wilking /Reuters /Landov