Dissolve yeast in water, let set.  Sift dry ingredients together.  Cut in shortening add buttermilk and yeast.  Mix with spoon until flour is moistened.  Do not over mix.  Place in covered greased bowl.  (Can be refrigerated for weeks at this point

To use:
     Roll dough on floured surface to 1/2 or 3/4 inch thick and cut.  Let rise  in warm place about 2 hours.  Preheat oven to 400 degrees.  Bake on lightly greased baking sheet 20 to 30 minutes until lightly golden.