Pop Rocks (UK: Space ust) is a carbonated candy with ingredients including sugar, lactose (milk sugar), corn syrup, and flavoring. The idea of the product was patented by General Foods research chemist William A. Mitchell in 1956. The Pop Rocks candy was first offered to the public in 1975. Around 1983, General Foods stopped selling the candy; some would believe this was because of an urban legend. In 1985, Kraft Foods bought the rights to the candy product and re-marketed it as Action Candy through a company called Carbonated Candy. Since 1979, Zeta Espacial S.A., a company based in the municipality of Rubí in Barcelona, Spain, has manufactured, sold, and exported the product.