Lemon Custard Filling - cooking recipe

Ingredients

1/2 cup white sugar
1/4 cup cornstarch
1/4 teaspoon salt
2 egg yolks
3/4 cup water
1/3 cup lemon juice
2 tablespoons butter

Preparation

In a large saucepan or double boiler combine sugar, cornstarch and salt. Mix well. Beat the egg yolks and water together, then whisk into sugar mixture. Cook over medium heat, stirring constantly, until mixture is thickened. Remove from heat and stir in lemon juice and butter. Cover with plastic wrap until completely cooled.