Sprinkle yeast into 1/4 cup warm water and set the timer for ten minutes to let the yeast dissolve.
Sift flour, soda, and sugar together in a large bowl.
Blend in shortening.
When the timer is done, add yeast mixture and buttermilk and mix well. Make sure the flour at the bottom of the bowl is mixed in.
Cover bowl and store in the refrigerator to use as needed.
When ready to bake, heat the oven to 400°F.
Pull off enough dough for the number of biscuits needed. Cut biscuits out on a lightly floured surface (don’t twist the cutter). Put a little flour on your hands. Place biscuits on a greased pan and bake until lightly browned, about 10 minutes (no need to wait for dough to rise).Note: Handle dough as little as possible. Your hands warm the dough, and that can impact rising in the oven.