M&M candies are small, round chocolate candies with colorful candy shells. Each candy shell has a lowercase letter "m" printed on one side. Colors include orange, yellow, brown and blue.
Developed by Mars Corporation in 1941, original M&M candies featured a milk chocolate filling. In 1954, Mars introduced Peanut M&Ms. As of 2015, Mars sells M&Ms in over 100 countries; the candies are available in a wide variety of flavors and styles, including Peanut Butter, Almond, Dark Chocolate and Crispy.
The concept of candy-coated chocolates inspired Forrest Mars when he visited Spain during the Spanish Civil War in the 1930s. He witnessed soldiers eating chocolate pellets encased in a hard edible coating to prevent melting, and developed the M&Ms concept from there.