Shake all the ingredients with ice and strain into a small cocktail glass. Garnish with the flamed lemon zest.
This was the Cosmopolitan of the thirties. Add orange juice and you have the Robson; add Vermouth (Dry) and you have Frank Meier's version from the Ritz Bar in Paris. My guess is Frank was being patriotic and wanted to get a French product in this popular cocktail. Johnny Brooks created the Cubanola by adding orange juice, pineapple juice, and egg white to the regular Bacardi Cocktail with great success. Brooks worked at the famous Stork Club in New York City until it closed.