Put milk and sugar in small pan and heat just until it starts to simmer and come to a boil. (see Notes below)
In the meantime, blend eggs, salt and vanilla.
Once milk starts to bubble, remove from heat and add a small amount to egg mixture. Blend immediately. (see Notes below)
Add the rest of the milk and blend well.
Pour into two mugs and sprinkle with nutmeg.
Enjoy!
Notes
Heating: Bringing this just to a boil essentially "cooks" the egg enough that it isn't considered raw any longer.
Adding the Milk: If you add all the milk at once, sometimes the egg will cook too much and you'll end up with little chunks of cooked egg in your custard, which obviously isn't so great. :)
Maple Syrup: If you prefer to use maple syrup instead of sugar, you may. It adds an extra hint of delicious flavor!