Here's a recipie. I don't remember how my parents make theirs though.
Beat the egg yolks and sugar together until thick. Slowly stir in the brandy, rum, peach brandy, milk and cream. Refrigerate until thoroughly chilled and pour into a punch bowl. Beat the egg whites until stiff and fold gently into the eggnog. Grate a little nutmeg on top and serve in 4-ounce punch glasses.
12 eggs, separated
2 cups superfine sugar
1 pint brandy
1/2 pint light rum
1/2 pint peach brandy
3 pints milk
1 pint heavy cream
Nutmeg
Note: If there is a problem with eggs in your region, do not prepare this recipe.