Beat 2 egg yolks until lightened in color. Add 1/3 cup sugar, beating until dissolved; set aside. Combine 2 cups 1% low-fat milk, 1 teaspoon vanilla, and 1 dash each cinnamon and nutmeg in a saucepan over high heat; bring to a boil, stirring occasionally.
Remove from heat, and gradually whisk into egg mixture. Return to pot, and cook to 160°. Remove from heat, stir in 1/4 cup white rum, and pour into a bowl; set in the refrigerator. Beat 4 pasteurized egg whites in a separate bowl until soft peaks form; with mixer running, gradually add 1 tablespoon sugar, and beat until stiff peaks form. Whisk egg whites into chilled mixture; sprinkle with cinnamon.
Makes 6 servings.