Mrs. Pat Neff Pecan Pie

4 egg yokes in a bowl

1 tablespoon butter

1 tablespoon white vinegar

1 teaspoon vanilla

1 ½ cups chopped pecans

1 ½ cups raisins (optional)

Mix egg yolks, sugar, butter, vinegar, vanilla together.  Pour in a pie crust.  Top with pecans and raisins if using and bake at 350 degrees for 40 minutes.