The Everlasting Gobstopper is both a fiction

Fiction

Fiction is the form of any narrative or informative work that deals, in part or in whole, with information or events that are not factual, but rather, imaginary—that is, invented by the author. Although fiction describes a major branch of literary work, it may also refer to theatrical,...

al brand of gobstopper

Gobstopper

Gobstoppers, known as jawbreakers in Canada and the United States, are a type of hard confectionery. They are usually round, usually range from about 1 cm across to 3 cm across and are traditionally very hard.The term...

, and a real-life confection

Confectionery

Confectionery is the set of food items that are rich in sugar, any one or type of which is called a confection. Modern usage may include substances rich in artificial sweeteners as well...

 named after the fictional product.
While jawbreakers have been known as "gobstoppers" in the United Kingdom

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 for at least eighty years, the fictional Everlasting Gobstoppers first appeared in Roald Dahl

Roald Dahl

Roald Dahl was a British novelist, short story writer, fighter pilot and screenwriter.Born in Wales to Norwegian parents, he served in the Royal Air Force during the Second World War, in which he became a flying ace and intelligence agent, rising to the rank of Wing Commander...

's 1964 children's book

Children's literature

Children's literature is for readers and listeners up to about age twelve; it is often defined in four different ways: books written by children, books written for children, books chosen by children, or books chosen for children. It is often illustrated. The term is used in senses which sometimes...

 Charlie and the Chocolate Factory

Charlie and the Chocolate Factory

Charlie and the Chocolate Factory is a 1964 children's book by British author Roald Dahl. The story features the adventures of young Charlie Bucket inside the chocolate factory of the eccentric chocolatier, Willy Wonka....

, and later in its two movie adaptations
In the original novel, the Everlasting Gobstopper looked like a normal round jawbreaker which flashed with a variety of colors.