Step 1

Heat the eggnog in a small saucepan until it barely comes to a simmer. Add the brandy and rum and pour into a mug. Top with the whipped cream and sprinkle with nutmeg.

Step 2

To make your own eggnog, first whisk together the egg yolks with the sugar until well combined.

Step 3

Heat the half and half and nutmeg in a saucepan until it comes to a simmer. Add a ladle of the hot liquid to the egg yolks while whisking. Add another ladle, whisking again, and a third, still whisking. Add the yolk mixture to the pan, whisking or stirring constantly over medium heat until it starts to thicken. (Don't let it boil.)