Start by preheating the oven to 500°F.
In a large mixing bowl whisk together flour, baking powder, and salt.
Use your hand and create a well in the center of the flour.
Add the Crisco and place it in the well.
Get some of the Crisco on your hand to grease the cast iron skillet, and set it aside.
Pour the buttermilk into the well in the mixing bowl.
Use your hand to squish together the Crisco and buttermilk, pulling in a little flour at a time from the bottom and sides of the bowl.
Once the Crisco is broken up, start swirling your hand around the bowl, in a circular motion, pulling in more and more flour to combine with the Crisco and buttermilk.
Continue to do this until a soft dough forms in the center of the bowl. The dough comes together very quickly.
Once the dough has come together, grab a little flour from along the edge of the bowl and sprinkle some of the flour onto your work surface.
Transfer the dough from the mixing bowl onto your floured work surface.
Fold the dough over onto itself about a half a dozen times, flouring the dough if it sticks to your hand. Don't overwork the dough, fold it over onto itself just until the dough holds together.
Pat out the dough with your hand to about a ¾ inch thickness.
Cut out biscuits using a round cookie cutter.
Place the biscuits onto the prepared skillet.
Place skillet in the oven and bake biscuits for 10-15 minutes until the biscuits are a light golden brown along the top edges.
Serve biscuits with softened butter if desired.