Everlasting Gobstopper Jawbreakers Candy
Everlasting Gobstoppers are jawbreakers -- densely layered mouthfuls of hardened sugar that seem to last forever. The name comes from Roald Dahl's book Charlie and the Chocolate Factory, in which there's a fictional Everlasting Gobstopper that never gets smaller and can never be finished, made "for children with very little pocket money."
The real life Gobstoppers are brightly colored spheres about the same size as a marble, with fruity, sour flavors. As the layers dissolve, the color and flavor changes, ending with a sweet, cool powdery center that's a lot like a SweeTART.