Vinegar Pie

This was my Grandmother Swapp's (Lucy Celeste Laney Swapp) pie recipe.
It was a favorite of my Fathers (Don Melvin Swapp)
3 egg yolks, beaten
1 cup sugar
1/4 teaspoon salt
1 3/4 cup boiling water
1/4 cup cider vinegar
1/4 cup corn starch
1/4 cup cold water
1 teaspoon lemon extract
a baked 9" pie shell
Meringue of 3 egg whites
Place egg yolks in top of double boiler; add sugar and salt.
Gradually add boiling water stirring constantly. Add vinegar
and cornstarch dissolved in cold water.
Cook over boiling water until thick and smooth, about 12 minutes.
Remove from heat. Add lemon extract. Stir until
filling is smooth and blended, scraping sides of pan.
Pour hot filling into pie shell.
Top lukewarm filling with meringue.
Brown in moderate oven (350F)

Now that you hav all turned up your noses
you ought to try it.
Mom