Step 1: Beat egg yolks well, adding sugar gradually.

Step 2: Add rum while beating, then brandy, rye or bourbon.

Step 3: Add vanilla and a pinch of ground nutmeg.

Step 4: Chill several hours, adding cream and milk from time to time and stirring.

Step 5: Beat egg whites until stiff.

Step 6: Fold half into chilled mixture.

Step 7: Add 3 tbsp more sugar to remaining egg whites and beat until very stiff.

Step 8: Spread on top of eggnog and swirl.

Step 9: Sprinkle with nutmeg.