Does eggnog include raw egg??
Traditionally, yes, eggnog included raw eggs. However, some countries today, such as the United States, severely restrict the use of raw egg in products, due to health concerns; thus, most commercial eggnog does not include raw eggs. (The FDA actually limits the egg yolk solids in eggnog to less than 1%.)
As to what typical ingredients are included in eggnog, these are: milk; cream; sugar; some sort of an alcohol like rum, brandy, vodka, cognac, or whiskey; whipped eggs; and sometimes nutmeg, cinnamon, or other spices.
If you really can't pass up the egg nog, try a low fat egg nog recipe like this one:
2 cups nonfat milk
2 large strips orange and/or lemon zest
1 vanilla bean
2 large eggs plus 1 egg yolk
1/3 cup sugar
1 teaspoon cornstarch
White rum or bourbon (optional)
Freshly grated nutmeg, for garnish
Combine 1 1/2 cups milk and the citrus zest in a medium saucepan. Split the vanilla bean lengthwise and scrape out the seeds; add the seeds and pod to the saucepan and bring to a simmer over medium heat. Meanwhile, whisk the eggs, egg yolk, sugar and cornstarch in a medium bowl until light yellow.
Gradually pour the hot milk mixture into the egg mixture, whisking constantly, then pour back into the pan. Place over medium heat and stir constantly with a wooden spoon in a figure-eight motion until the eggnog begins to thicken, about 8 minutes. Remove from the heat and immediately stir in the remaining 1/2 cup milk to stop the cooking. Transfer the eggnog to a large bowl and place over a larger bowl of ice to cool, then chill until ready to serve.
Remove the zest and vanilla pod. Spike the eggnog with liquor, if desired, and garnish with nutmeg.