Heat the nog in a large microwave-safe mug for 1 to 1½ minutes or until hot, stirirng once halfway through.
Combine the hot espresso and a dash of cinnamon together and add to the nog. Stir once or twice to combine the espresso and the nog. Serve immediately. Top with whipped cream, if desired.
Recipe by Espresso and Cream at https://www.espressoandcream.com/2015/12/homemade-vanilla-eggnog-latte.html