- 1/2 gallon eggnog
- 1 1/2 cups chocolate syrup
- 1 cup peppermint mocha-flavored coffee liqueur (such as Kahlua®)
- 1/2 teaspoon peppermint extract
- 1 1/4 cups frozen whipped topping, thawed
- Stir eggnog, chocolate syrup, coffee liqueur, and peppermint extract together in a large bowl with a whisk until smooth. Fold whipped topping through the eggnog mixture.