3 1/2 c  Flour

      2 c  Whole wheat flour

      1 c  Rye flour

      1 c  Cornmeal

      2 c  Cracked wheat

      4 ts Salt

    1/2 c  Dry milk

      1    Egg

      1 pk Dry yeast (1 T)

      1 pt Chicken stock

  Ingredients not generally available may be found at health food stores.
  Dissolve yeast in 1/4 c warm water. Add chicken stock and pour into dry
  ingredients. Knead for 3 minutes, working into a stiff dough. Roll dough
  into a 1/4 in. thick sheet and cut with cookie cutters (cutters shaped like
  dog biscuits are available). Bake in 300 degree oven for 45 minutes, then
  turn oven off and leave biscuits in oven overnight. In the morning the
  biscuits will be bone hard.Note: This dough is extremely stiff to work
  with, but the end product is excellent. From the Chester County, PA ASPCA
  POSTED BY MICHAEL KEAN, Prodigy ID# VMXV03A