Sourdough Biscuits
["1 pkg. dry yeast", "1 c. warm water", "6 c. self-rising flour", "1/2 c. sugar", "1/2 c. shortening", "2 c. sour milk"]
["Dissolve yeast in warm water.", "Mix dry ingredients and cut in shortening.", "Add milk and yeast.", "Cover and refrigerate until cold.", "Roll out on floured surface and cut out.", "Place on ungreased cookie sheet.", "Bake at 450\u00b0 for 15 minutes."]
["yeast", "water", "flour", "sugar", "shortening", "sour milk"]