From another Author friend:
Since we are talking about different holiday traditions throughout the world, I wanted to share with everybody a recipe for Puerto Rican style egg nog...it is called Coquito. It is delicious! Some people like to add vanilla or nutmeg, but I have tasted this recipe and it is fabulous. Enjoy!
2 - 3 cinnamon sticks
2 c. water
12 oz. evaporated milk
14 oz. condensed milk
4 egg yolks
15 oz. cream of coconut
5 c. white rum (Bacardi, Don Q. etc) (Adjust to taste)
Start by boiling the cinnamon sticks in the 2 cups of water.
When the water turns yellow and has the smell and you can taste the cinnamon, take the sticks out.
Now add the evaporated milk, condensed milk and egg yolks and cook at a very low temperature. Make sure to stir while it is cooking to avoid it sticking to your pan. (If it does, see hint below.)
After it has boiled for a few minutes, stir in the cream of coconut and then the rum. Stir it very well and take off the stove.
Let it cool, chill and enjoy it.