In a large Dutch oven, stir together egg yolks and sugar. Gradually whisk in milk, ginger, and nutmeg. Cook over medium heat, stirring frequently, until mixture thickens and coats the back of a spoon, 18 to 20 minutes. Remove from heat; add ice cream, stirring until melted. Cover and refrigerate for 8 hours. Garnish with whipped cream and nutmeg, if desired.
Recipe by Taste of the South at https://www.tasteofthesouthmagazine.com/spiced-eggnog/