Add flour to mixing bowl and make a well in the middle. Add the buttermilk and shortening.
Work the shortening with your fingers, breaking it up into very small pieces.
Start working the flour into the liquid, pulling it in a little at a time. Work in just enough flour to make a soft dough, neither sticky or dry. There should still be some flour around the edges of the bowl. You should NOT use all the flour.
Dust some flour on your hands. Pinch off pieces of dough about the size of a small orange or tangerine, about 1/3 cup. Work the dough in one hand, using your fingers to move it in a circular motion. Don't press hard, you just want to shape them.
Lay each biscuit on the greased baking sheet right next to each other, with no space in between. Once you have all the biscuits on the sheet, press three knuckles lightly in the top of each.
Bake for about 20 minutes, or until golden brown on top. Remove from pan immediately, place in a basket, and cover with a tea towel.