Vinegar Pie Iii - cooking recipe

Ingredients

1 1/2 cups white sugar
4 tablespoons all-purpose flour
4 tablespoons distilled white vinegar
3 egg yolks, beaten
3 egg whites
2 1/2 cups hot water
1/2 teaspoon lemon extract
1 teaspoon butter
1 (9 inch) pie crust, baked

Preparation

Mix sugar and flour, add vinegar and beaten egg yolks. Mix well.
Add 1 cup hot water. Heat remaining 1 1/2 cups water to boiling and stir in egg yolk mixture. Boil mixture until thick. Remove from heat.
Add lemon extract and butter. Cool. Pour into a baked pie shell.
Preheat oven to 350 degrees F (175 degrees C). Beat egg whites until stiff; add 6 Tablespoons sugar and 1/4 teaspoon cream of tartar and continue beating until it holds a peak. Pile meringue onto filling. Bake until meringue is lightly browned, 10 - 15 minutes.