Pop Rocks Strawberry: Pop Rocks. The candy with history... Introduced in the 1970s in the USA Pop Rocks became so popular it had to be withdrawn due to the short use-by date of the product (or when mixed with carbonated drinks Pop Rocks could cause stomach explosions, who knows!). Anyway, its back & more popping than ever. Parodied in such classics as the Simpsons. Strawberry Flavour.