NOTE: It's best to plan ahead with making Eggnog, as it really should be refrigerated overnight and served completely chilled. You can make the whipped cream ahead of time and keep it in the refrigerator, or you can make it just before serving. I prefer to have this all done ahead of time, and then all you do is assemble the Eggnog, place a cookie or two on the side, and you have a stunning presentation in very little time. ALSO: You can use canned whipped cream if you choose, but it won't hold up as well as this recipe, because this recipe is for stabilized whipped cream, that won't fall like regular or traditional whipped cream. You can also use Cocoa if preferred instead of cinnamon. Enjoy!