4 tbsp. flour
1 c. sugar
1 c. boiling water
2 egg yolks
1 tsp. lemon extract
3 tbsp. cider vinegar
2 egg whites
4 tbsp. sugar

Mix together thoroughly flour, sugar, boiling water. Cook 5 minutes then add egg yolks, well beaten. Cook 2 minutes in double boiler. Then add lemon extract and cider vinegar. Pour into baked pie crust and let set. Beat egg whites until stiff, add sugar. Put in pie and brown in oven.