This recipe is a classic although it seems
no one is quite sure of its origins.
Many recipes say to use
Old Tom gin, which is a little sweeter than most gins, which I couldn't find in Paris. (Although to be honest, when I need a cocktail, I don't want to spend too much time tracking down a bottle of liquor.) They likely have it at
La Maison du Whisky.) So I stuck with the bottle of Beefeater I had on hand, and it worked just fine.