Step 6: Serve
If the eggnog has separated, give it a quick (gentle!) stir before serving. Don't let the eggnog sit out too long - even if it does have alcohol, refrigerate to avoid spoilage. I've never had this problem: we always drink it so fast there's nothing left to worry about! Thankfully it's fast to make more, because you'll never be able to drink the commercial stuff again.
Happy Holidays, and enjoy your eggnog!