Easy Boiled Custard

Directions

1. 1
   Combine 1 cup milk and cornstarch in top of a double boiler, stirring until well blended. Add remaining 3 cups milk and sweetened condensed milk; stir well. Cook over boiling water, stirring constantly, until mixture thickens and is smooth.
2. 2
   Beat egg yolks slightly. Gradually stir one-fourth of hot milk mixture into yolks; add to remaining hot milk mixture, stirring constantly. Cook over boiling water, stirring constantly with a metal spoon, until mixture thickens and coats the spoon. Remove from heat, and stir in vanilla and salt. Set custard aside and let cool to room temperature.
3. 3
   Beat egg whites (at room temperature) until stiff peaks form. Gently fold egg whites into cooled custard mixture; chill thoroughly. Spoon custard into individual serving bowls to serve.