Grandma'S Raisin Pie
["9-inch unbaked pie shell", "4 eggs, separated", "2 Tbsp. soft butter", "1 1/2 c. sugar", "1 c. pecans, chopped", "1/2 c. dark raisins", "1 Tbsp. apple cider vinegar", "1 tsp. vanilla"]
["Preheat oven to 325\u00b0.", "In a medium bowl, slightly beat egg yolks.", "Beat in butter until blended.", "Add sugar.", "Beat until light and fluffy.", "Add pecans and raisins, vinegar and vanilla. Mix well."]
["unbaked pie shell", "eggs", "butter", "sugar", "pecans", "dark raisins", "apple cider vinegar", "vanilla"]