Prick the bottom of an unbaked pie shell with fork and rub mixture of 1 tablespoon flour and 1 tablespoon sugar into holes.
(this keeps you from having a soggy pie.
Blend 2 tablespoons flour and 1 1/2 cups sugar. Melt butter slowly. Beat eggs. Add sugar and flour to eggs; beat. Add butter and beat. Add salt. Add buttermilk and mix; add lemon juice and vanilla and blend well. Pour into pastry shell and bake at 300 degrees for 50-60 minutes.