This enduring classic is so beloved, it even has a bar in Brooklyn, New York, named after it.
1 1/2 oz. gin
3/4 oz. fresh lemon juice
2 tsp. raspberry syrup
1 fresh egg white (pasteurized if you like)
Tools: shaker, strainer
Combine ingredients in a shaker and shake without ice for 10 seconds. Add ice and shake vigorously for at least 10 seconds. Strain into a chilled glass.
Adapted from Old Waldorf Bar Days by Albert Stevens Crocket (1931)