In a medium saucepan, combine the heavy cream, whole milk, sugar, nutmeg, cinnamon, and a pinch of salt. Heat over medium heat until just steaming, stirring occasionally until the sugar dissolves.
In a separate bowl, whisk together the egg yolks until light and frothy.
Gradually pour about 1 cup of the hot cream mixture into the egg yolks while whisking continuously to temper the eggs. This prevents them from scrambling.
Pour the egg yolk mixture back into the saucepan with the remaining cream mixture. Cook over low heat, stirring constantly, until the mixture thickens slightly and coats the back of a spoon (about 5-7 minutes).
Remove the saucepan from heat and stir in the vanilla extract. Allow the mixture to cool to room temperature.
Once cooled, cover the mixture and refrigerate for at least 4 hours or overnight to chill thoroughly.
Once the mixture is well chilled, churn it in an ice cream maker according to the manufacturer’s instructions until it reaches a soft-serve consistency.
Transfer the ice cream to an airtight container and freeze for at least 4 hours or until firm.
Serve scoops of the eggnog ice cream topped with whipped cream and a sprinkle of nutmeg.
Notes
Serve with whipped cream and extra nutmeg for a festive touch.