Pan-Galactic Gargle-Blaster

The Pan-Galactic Gargle-Blaster was a beverage served by Milo on the Rosette of Sirius. The Twelfth Doctor drank one to help cure a sore throat. He was reluctant to accept a second one because he "had a TARDIS to drive" and did not know where he would end up, but then said it would be rude to let it go to waste. (COMIC: Clara Oswald and the School of Death).

The Twelfth Doctor also mentioned Pan-Galactic Gargoyle-Blasters after meeting some "garrulous gargoyles". (COMIC: Terror of the Cabinet Noir)

Behind the scenes
The Pan Galactic Gargle Blaster (formatted without hyphens) was an alcoholic drink in The Hitchhiker's Guide to the Galaxy series by Douglas Adams.