OMG. This eggnog is nothing like the premixed, store-bought crap. It is light, bourbony and spicy!
In the bowl of a stand mixer, beat the egg yolks until they lighten in color. Gradually add the 1/3 cup sugar and continue to beat until it is completely dissolved. Add the milk, cream, bourbon and nutmeg and stir to combine. Move to another bowl and wipe mixer bowl clean.
Place the egg whites in the bowl of a stand mixer and beat to soft peaks. With the mixer still running gradually add the 1 tablespoon of sugar and beat until stiff peaks form.
Whisk the egg whites into the mixture. Chill and serve. Selfie yourself. Be the envy of all your Instagram followers.