Whisk yolks with sugar until creamy and sugar begins to dissolve.
Add cream, milk, bourbon and rum and stir to combine.
Stir in nutmeg and vanilla and chill well.
Serve chilled on the rocks with a sprinkle of nutmeg if desired.
Notes
Variation 1: Include the egg whites I don’t use the egg whites, but it is the traditional way. To use the whites, reserve 1/4 cup of the sugar. Beat egg whites to soft peaks and then beat in sugar until stiff peaks form. In a separate bowl, beat 1/2 cup heavy cream. Fold egg whites into cream and serve on top of eggnog with a sprinkle of nutmeg.Variation 2: Cook the eggs Making a danger-free eggnog is pretty easy too. Simply follow the same recipe above, but leave out the alcohol and mix only half the milk and cream into the blend, then heat the mixture in a glass or metal bowl over a pot of simmering water for about five or six minutes. Be sure to stir constantly. Refrigerate until well chilled.When ready to serve, simply stir in the remaining cream and milk, as well as the bourbon and rum.Variation 3: Virgin Eggnog Follow the recipe as directed, omitting the alcohol and adding an extra 3/4 cup of whole milk, 3/4 cup of cream and 1-2 tablespoons of rum extract to the mix. Chill and serve.