Many works of fiction have incorporated into their world the existence of beverages – liquids made for popular consumption - which may create a sense of the world in which the story takes place, and in some cases may serve to advance the plot of the story. These products may be fictional brands which serve as a stand in for brand names, and in that capacity may be a vessel for mockery of the marketing culture associated with brand name products (e.g., Duff Beer from The Simpsons; Buzz Beer from The Drew Carey Show). In science fiction, beverages from alien races may enhance the sense of a futuristic society (e.g. Romulan Ale in Star Trek).
While there are many fictional liquids that can be consumed, fictional liquid medicines and magical potions (such as the liquid that causes Alice to shrink in Alice in Wonderland) may not be widely available for common consumption, or may simply not be described as being used for that purpose, and thus would not be considered "beverages" at all.
List of fictional beverages Wikipedia
Some real-life beverages were created and marketed after appearing as fictional, as is the case with Duff Beer from the TV show The Simpsons. To promote The Simpsons Movie, convenience store 7-Eleven marketed a Duff-branded energy drink.Booty Sweat - Tropic Thunder
Brawndo - Idiocracy
Duff Beer - The Simpsons
Squishee - The Simpsons
Swill - Saturday Night Live
Buzz Cola - The Simpsons
Romulan Ale - at the Star Trek Experience in Las Vegas, NV.
Romulan Ale - an energy drink created and marketed by Boston America Corp.
Klingon Raktajino - also available previously at the Star Trek Experience.
Slurm - Futurama
Victory Gin In the late 1980s and early '90's UK off licence chain Victoria Wine sold a own brand of gin called Victory Gin. It was not deliberately styled after the unpalatable product in Nineteen Eighty-Four, it was originally called Portsmouth Gin, but this presumably caused confusion with Plymouth Gin. The name was changed to Victory, Nelson's famous flagship; a tourist attraction in the town, those choosing and approving presumably unaware of the brands's literary namesake.