Homestead Raisin Pie

Description
This recipe came from an estate sale. I obtained it when I purchased the family collection from the Turner Estate in Dallas, Texas in 1997.
 * Contributed by Catsrecipes Y-Group

Ingredients

 * 1 baked pie shell
 * 1⅓ cups seeded raisins
 * 2 cups water
 * 3 eggs separated
 * 1 cup granulated sugar
 * 2 tablespoons vinegar
 * 2 tablespoons flour
 * 2 tablespoons butter
 * 3 egg whites

Directions

 * 1) Add raisins to water in saucepan and simmer 5 minutes.
 * 2) Beat egg yolks, sugar, vinegar and flour until light and creamy.
 * 3) Slowly add to raisins then cook stirring constantly for 5 minutes.
 * 4) Remove from heat then stir in butter and cool until lukewarm.
 * 5) Pour raisin mixture into pie shell and top with well beaten egg whites.
 * 6) Bake at 350 for 15 minutes.