How to Make It
Mix together sugar and egg yolks and beat until almost white in color. Set aside.
Cook evaporated milk, whole milk, and condensed milk over medium-low heat, stirring constantly, 20 minutes or until milk mixture thickens and reaches 160˚.
Slowly pour 2 cups of hot milk mixture into the egg yolk and sugar mixture to liquify. Once combined, pour back into the hot milk mixture. Stir until smooth and hot.
Beat egg whites until stiff and add to milk for a frothy topping. Sprinkle with nutmeg if desired.