Sherry is making a comeback, and this recipe by ArtofDrink shows how delicious it can be, especially if you use heavy cream, since we are eliminating the egg.
2½ oz Cream Sherry
3T Heavy Cream
1 tsp Simple Syrup (2:1)
3 drops InstaFoam
Instructions: In a cocktail shaker combine sherry, cream simple syrup and an egg. Shake vigorously (or use a stick blender) for 30 seconds. Add ice and shake again for 30 more seconds. Strain in to a mug or coffee cup and sprinkle with nutmeg.