Charlie and the Chocolate Factory

Charlie and the Chocolate Factory is a children's novel written by Roald Dahl. First released in 1964, it is considered Dahl's most well-known work. It takes inspiration from his experience with chocolate companies and has been adapted into films, theater plays, and other mediums. There is also a sequel book titled Charlie and the Great Glass Elevator.

Charlie Bucket, a nice boy from a poor family, is told about a contest held by the eccentric chocolatier Willy Wonka. Wonka has hidden five golden tickets in his chocolate bars, and whoever finds them will get to go on a tour of his candy factory, which is usually secretive. Charlie luckily acquires the final ticket, with the other four claimed by unpleasant children: gluttonous Augustus Gloop, compulsive gum-chewer Violet Beauregade, spoiled-rotten Veruca Salt, and television-addicted Mike Teavee. When they all tour the whimsical factory, they are met by many surprises.

Books

In Chapter 21, "Good-bye Violet," Violet chews Wonka's experimental three-course dinner gum despite being told not to. When she gets to the blueberry pie dessert portion, she turns blue and swells with juice, essentially becoming a giant blueberry. She is dejuiced later but retains her new color.