Add hot coffee or espresso to a glass or mug. Then add milk and eggnog mixture.
Combine eggnog and steamed milk to a jar. Shake it up 5-7 times to encourage bubbles. You can also use a milk steamer or frother to get it foamy if you have one. Then add milk and eggnog mixture to coffee.
Top with whipped cream and cinnamon or nutmeg if desired. For a holiday theme, add fun sprinkles in holiday shapes or colors.
To turn your Eggnog Latte into an after-dinner drink for guests, reduce the eggnog and milk to 1/4 cup each. Then add in a shot of bourbon, rum, or brandy instead!
For a stronger eggnog flavor, skip the milk and only eggnog.