In the 1950′s, General Foods chemist, William Mitchell, was experimenting with ways to trap carbon dioxide in an attempt to make instant soda pop. He developed a method that trapped to CO2 in hard candy tablets.Â While in his lab one afternoon he decided to pop some of the experimental candy in his mouth. To his surprise they popped. Upon reporting his findings, no one General Foods could think of a use for his discovery, and the product was shelved for almost 20 years. Fast forward to 1975, Mitchell’s discovery was introduced as Pop Rocks, and quickly became the hottest selling candy in history. Between the years 1975-1980, more than 500 million packets of Pop Rocks were sold!