Dissolve yeast in water. Into a bowl, sift flour with other dry ingredients. Cut in shortening, add buttermilk, then add yeast mixture.
Stir until all flour is dampened. Knead on floured board a minute, roll to desired thickness, and cut with a biscuit cutter.
Bake at 400° F about 12 minutes. Dough may be kept refrigerated and used about a week.Servings: