Potato Salad
	6 Cups cooked potatoes, cut into 1" pieces 3 or 4 scallions, chopped 5 hard-boiled eggs, whites chopped 1 teaspoon celery seed 1 1/2 teaspoons salt 1/4 teaspoon pepper 2 1/2 teaspoons Dijon mustard 1 cup sour cream 1/2 cup mayonnaise 2 tablespoons vinegar Mix potatoes, onions, chopped egg whites, and seasoning together in a bowl.  Set aside. Mix egg yolks, mustard, sour cream, mayonnaise, and vinegar.  Add to potato mixture and mix.  Chill.