Peter Pan is a brand of peanut butter produced by Conagra Brands and named after the J. M. Barrie character. The product was introduced by Swift & Company (originally through their "Derby Foods" subsidiary) in 1920 under the name "E. K. Pond". The product was renamed in 1928. Originally packaged in a tin can with a turn key and reclosable lid, the product's packaging was changed to glass jars because of metal shortages during World War II. In 1988, Peter Pan was the first brand of peanut butter to be sold in plastic jars.