Breakfast martini

A breakfast martini is a marmalade cocktail with gin, marmalade, orange liqueur, and lemon juice, created by bartender Salvatore Calabrese. Although the drink contains no vermouth, the term "breakfast martini" is consistent with the trend of calling any straight liquor in a martini glass a "martini," such as the saketini or other variations.
The drink was invented in 1996 at the Library Bar at the Lanesborough Hotel in London, England. A similar drink, the Marmalade Cocktail, was invented in the 1920s by Harry Craddock and published in his standard reference book, the Savoy Cocktail Book.
The name has been applied to various other martini-style drinks as well.