Jawbreaker candy are made through a process called panning, where sugar syrup and flavorings are repeatedly added to a core, building up layers over several days. Popular since the early 1900s, jawbreakers gained further fame as the Everlasting Gobstoppers in Roald Dahl's Charlie and the Chocolate Factory. They come in various sizes, from small to impressively large 1 Inch Jawbreakers, and often feature a sweet or sometimes sour taste that changes as each layer dissolves. Jawbreakers remain surprisingly popular today.