1 c. blackberry jam
1 c. buttermilk
1/2 c. butter
3 tbsp. flour
4 eggs, separated
1 c. sugar
1 tsp. vanilla
4 tbsp. sugar
1 (9 in.) unbaked pie shell

Preheat oven to 350 degrees. Mix jam, sugar, buttermilk, butter, flour, egg yolks, and vanilla well. Pour into unbaked pie shell. Bake for 40 minutes. Beat the 4 egg whites until stiff, adding 4 tablespoons sugar gradually. Spread meringue on top of pie and return to oven to brown lightly.