What's the difference between cooked and uncooked eggnog?
Cooked or Uncooked eggnog is a safety decision.In US you get pasteurised eggs generally, unless you are in a raw food store or something. With pasteurised eggs you can use then raw in recipes without worry. In some other countries (like in India where I am now) eggs are not pasteurised. So to kill the salmonella etc, it is required to bring the eggs to above 160F in recipes. This you can see in Tiramisu recipes also where it similarly starts with a custard.