Pop Rocks
Pop Rocks are a kind of candy with carbonation added to make a "popping" feeling in the mouth of the person eating them.
How do they pop?[change]
The candy pops and fizzes because it contains bubbles of carbon dioxide under high pressure. When you melt the candy shell, the carbon dioxide escapes with a pop. When Pop Rocks® are made, the hot candy syrup is mixed with carbon dioxide gas under high pressure (600 pounds per square inch).
Other websites[change]
- Images of US patent 4289794 for Pop Rocks Archived 2007-11-06 at the Wayback Machine from the U.S. Patent and Trademark Office
- Pop Rocks: The Inside Story of America's Revolutionary Candy, book detailing the story of Pop Rocks development to Pop Rocks today
- How do Pop Rocks candy work?, an article from HowStuffWorks that explains how pop rocks candy is manufactured and also has links to the original patent
