Beat yolks with hand mixer until thick and lemon colored. Gradually add sugar, vanilla, nutmeg, beating well.
Place 4 c. milk in large saucepan. Gradually add yolk mixture, cook, stirring with whisk, constantly until mixture reaches 165. Remove from heat, cool.
Stir in the other milks. Gradually add run. Cover and chill overnight.
Add brandy and praline liqueur to eggnog before serving. Top each with whipped cream and nutmeg.
Recipe by Geaux Ask Alice! at https://geauxaskalice.com/holiday-eggnog/