Mom'S Vinegar Pie - cooking recipe

Ingredients

6 Tbsp. apple cider vinegar
3 Tbsp. flour
1 1/4 c. water
1/4 tsp. salt
1 tsp. lemon extract
3 egg yolks
meringue (for 9-inch pie shell)
1 baked pie shell

Preparation

Combine in a saucepan:
apple cider vinegar, flour, water, salt and lemon extract.
Beat egg yolks and blend with ingredients in saucepan.
Cook over medium heat until mixture comes to a boil, stirring constantly while mixture thickens and boils.
Boil and stir for 1 minute.
Remove from heat and pour into a baked pie shell.
Top with meringue and brown in oven.