Fill a glass with ice, add vodka and Kahlua, then eggnog. Stir until combined. Garnish with a sprinkling of nutmeg.
Notes
Adjust ingredients to suit your taste.You can also garnish the cocktail with whipped cream. If adding whipped cream, I suggest that you combine your cocktail in an ice filled cocktail shaker, then pour into a glass without ice. This will keep the whipped cream from separating as the ice melts.