After some tweaking, here is the eggnog recipe.
Incidentally, this uses a standard "2litre" carton of milk, so I saved the carton and poured the eggnog back to store it in the refrigerator. This does not taste store bought, it is much spicier. And that is a good thing....
700 ml milk (i used whole milk)
18 egg yolks
360 ml sugar
1.4 l milk
5 cinnamon sticks
7.5 ml nutmeg
Combine the first amount of milk with the spices and simmer over low heat.
Heat the second measure over medium heat.
In a mixing bowl, beat the egg yolks with the sugar. Once the milk is heated, slowly add the milk to the egg yolks with the mixer running at medium.
Return egg mixture to the pot and cook until it thickens. Add the milk with the steeped spices and immediately chill. an ice bath is the best way to go here. Once chilled, strain and decant into a suitable container. Enjoy. Ideally with lots of rum....