Cold Dough Kolac

Ingredients

 * 8 cups flour
 * 12 egg yolks
 * 1 tsp. salt
 * 2 cake yeast (2 ounces)
 * 1 1/2 lbs. shortening(butter or margarine)
 * 1 pint sour cream

Directions

 * 1) Sift flour. Crumble in yeast and add yolks, salt and sour cream. Knead until smooth. Put in refrigerator over night. Roll out on lightly floured and sugared board. Cut into squares, fill with any desired filling. Fold over twice, cut small slits along one side. Bake 30 mnutes in 325-F oven.