Directions

1. In a heavy medium saucepan stir together the sour cream, 1-1/2 cups sugar, flour, egg yolks, and raisins. Cook, stirring constantly, over medium heat until thickened and bubbly. Keep warm.
2. For meringue, place the egg whites and cream of tartar in a large mixing bowl. Beat with an electric mixer on medium speed until soft peaks form (tips curl). Gradually add 3/4 cup sugar, 1 tablespoon at a time, beating on high speed about 4 minute more or until mixture forms stiff glossy peaks (tips stand straight).
3. Pour warm filling into baked pie shell. Spread meringue over filling. Bake in a 350 degree F oven for 15 minutes. Remove and cool on a wire rack for 1 hour. Chill 3 to 6 hours before serving; cover for longer storage.