Place the egg yolks into the pot of the Ninja Foodi, don't forget to set the whites aside for another recipe if you prefer.
Add the sugar and the milk, and whisk this well until it's mixed.
Place your Ninja Foodi on the AIR CRISP/AIR FRYER setting, then select SEAR or SAUTE mode. Place the heat on #2 using the down arrow.
Cook and mix until the temperature reach 150*F. I use a silicone whisk so that I don't scratch the bottom of the pan, and keep a close eye on the mixture. It will reach this temperature quickly and mixing it helps it stay smooth.
Once it has reached the temperature, remove it from the heat and add the heavy cream, cinnamon, and vanilla. Mix well to combine.
Let the mixture fully cool to room temperature and place in the fridge until chilled.
Serve.
Notes
Use the egg whites for omelets, wraps, and hash.When your egg mixture reaches 150*F, remove it from heat, this is very important so that it does not overcook.Egg Nog is good for 4 days, do not keep it longer than that.Serve sprinkled with Nutmeg.