Vinegar Pie - cooking recipe

Ingredients

1 egg yolk
1 heaping Tbsp. flour
1 c. sugar
1 tsp. vinegar
1 c. boiling water
1 heaping Tbsp. butter

Preparation

Stir over low heat until thick.
Flavor with nutmeg or lemon and pour into baked pie crust.
Beat egg white (1), add one tablespoon sugar and 1/2 teaspoon lemon extract and fold in.
Pour mixture over pie and brown.