In the bowl of a stand mixer, beat the egg yolks until they lighten in color.
Gradually add the ⅓ cup sugar and continue to beat until it is completely dissolved.
Add the milk, cream, bourbon and nutmeg and stir to combine.
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.
