Firpo's Balloon Cocktail - Reviewed by Experts and Consumers at The Wormwood Society
1 1/2 oz rye whisky
1 1/2 oz sweet vermouth
1 1/2 oz absinthe or Pernod
2 dashes orange bitters or Angostura Bitters
1/4 oz egg whites
Shake with ice. Serve into a Champagne saucer.
The Gentleman's Companion, 1946