Serious Eats: Recipes
According to Ted Haigh (aka Dr. Cocktail), the French 75 is one of two cocktails named after the French 75-mm field gun, which was commonly used in World War I. "One barman in 1947," reports Haigh, "called it a Tom Collins with champagne instead of club soda. Vive la difference!" Here's Haigh's version of the recipe, from his wonderful book, Vintage Spirits and Forgotten Cocktails.
The combination of gin, lemon juice, and champagne brings out the best in each: it's tart, refreshing, herbal, and effervescent.