Vinegar Pie - cooking recipe

Ingredients

1 pie shell
3 egg yolks
1 c. sugar
2 Tbsp. cornstarch
1/3 tsp. salt
2 c. boiling water
4 Tbsp. vinegar

Preparation

Beat egg yolks until light and lemon colored.
Sift together the sugar, cornstarch and salt; stir into the beaten egg yolks. Add water gradually.
Add vinegar.
Place pan over hot water and cook until mixture thickens.
Put in pie shell.