Cappuccino Nog

6 eggs, slightly beaten
2/3 cup granulated sugar
1/8 tsp salt
5 cups milk
2 tsp vanilla
2 cups hot espresso coffee
1 cup coffee liqueur or brandy
2 cups whipping (heavy) cream
2 tbsp packed brown sugar
Ground cinnamon

Stir together eggs, granulated sugar and salt in heavy Dutch oven. Gradually stir in milk. Cook over low heat 15 to 20 minutes, stirring constantly, just until mixture coats a metal spoon; remove from heat. Stir in vanilla. Stir together coffee and liqueur. Gradually stir coffee mixture into egg mixture; keep warm.
Just before serving, beat whipping cream and brown sugar in chilled large bowl with electric mixer on high speed until stiff. Gently stir 2 cups of the whipped cream into egg mixture.
Pour into mugs. Top with dollops of remaining whipped cream. Sprinkle with cinnamon. Serve immediately. Immediately refrigerate any remaining nog.