Forrest Mars Sr. invented the recipe for M&M's during the Spanish Civil War. Mars saw soldiers eating pieces of chocolate covered with a hard sugary coating. The coating preventing the candy from melting in the hot sun. M&M's were first sold to the public in 1941, packaged in cardboard tubes. In 1948, the packaging changed from a tube to the brown plastic pouch known today. In 1954, "M&M's Peanut Chocolate Candies were introduced. That same year, the M&M's brand characters and the famous slogan "The milk chocolate melts in your mouth, not in your hand" were both trademarked. M&M's® Plain Chocolate Candies M&M's® History |