Ingredient
From Tardis Wiki, the free Doctor Who reference
According to the Millingdale website, "Gemini12" was the secret ingredient in their flavour of ice cream, Henrik's Surprise. (GAME: Cybus Spy [+]Loading...["Cybus Spy (video game)"])
According to Bernice Summerfield, lemonade and grenadine were ingredients for a Shirley Temple. (PROSE: Walking to Babylon [+]Loading...["Walking to Babylon (novel)"])