My Uncle owns a bar here in Thunder Bay called Newfie's Pub. There were a few times in the past when this version of eggnog was served at the bar. It took some hunting but I got the recipe.
1 bottle of screech
1 liter of fresh milk
1 tin evaporated milk
1/2 cup white sugar
Separate eggs beat yolks with 1/4 sugar then beat the whites with 1/4 sugar.
Combine all screech and milk and evaporated milk.
Add egg yolk mixture then top with the egg white mixture.
Sprinkle the nutmeg