Instructions
Shake, strain over ice in a highball, express and insert twist. Some garnish with nutmeg, though this is not considered traditional.
Notes
Troy Patterson, at the link, writes as though this cocktails is rather unpalatable. I haven't tried it, but I have to say that Calvados + Madeira sounds good to me. Maybe the egg white, without soda or much acid to balance it, adds an odd mouthfeel; this drink might benefit from soda or lemon (or simply omitting the egg and serving up).
Cocktail summary
Created by
Traditional cocktail of the University of Pennsylvania
Is an
authentic recipe
Reference
Calvados, Madeira, Egg white, Lime peel
PT5M
PT0M
Cocktail
Cocktail
1
craft, alcoholic