The Sherry Flip is a classic cocktail that was first published in How To Mix Drinks by Jerry Thomas in 1887. According to cocktail historians, the flip itself is template that has been around since at least the 16th century, but they were originally served warm and made with beer, rum, sugar, egg yolk, and egg white. Over time, they evolved into cold drinks that were served up, the most famous of which is this one that calls for fortified wine instead of beer.
Add sherry, simple syrup, egg white, egg yolk, and cubed ice to a shaker.
Shake for 10-20 seconds.
Strain into a goblet.
Garnish with grated nutmeg.