A Gigi 75 alternatively known as the French 75 cocktail or Soixante Quinze, blends gin, champagne, lemon juice, and sugar. It originated during World War I, attributed to Harry MacElhone, a bartender at Paris's esteemed New York Bar (later Harry's New York Bar). Legend has it that its potent mix mirrored the force of the French 75mm field gun.

Throughout the 1920s, the cocktail underwent refinement, solidifying its name and recipe. Its roots can be traced back to similar libations from the 19th century, such as the champagne cup, which often incorporated gin. Early renditions, documented in works like "Harry's ABC of Mixing Cocktails" (1922), varied in ingredients, with later iterations in "Here’s How" (1927) adopting the quintessential blend of gin, sugar, lemon juice, and champagne.

The French 75 gained popularity in America, notably at New York's Stork Club, and found its way into cinematic classics like "Casablanca" (1942) and John Wayne films. Its allure extended to television, with appearances in series like "Mr. Selfridge" (2016), set in the opulent backdrop of early 20th-century London.

Despite humorous anecdotes attributing its creation to figures like Gervais Raoul Lufbery, documented evidence credits its genesis to Harry MacElhone. This ensures its legacy as a timeless cocktail classic, celebrated for its delightful blend and historical significance.

Pour all the ingredients, except Champagne, into a shaker. Shake well and strain into a Champagne flute. Top up with Champagne. Stir gently.