Preheat oven to 490 degrees (that's right 490 degrees). Cut shortening into flour with pastry knife or fork until there are no clumps large than a pea. Pour buttermilk in, a little at a time, gently stirring until all flour is wet, Place dough onto a well-floured surface.
Gently fold the dough with flour until it is no longer sticky. Pat out dough gently bu hand until about 1 inch thick. Cut out biscuits with a standard biscuit cutter or you can use a glass. Place on a greased cookie sheet and place in the oven on center rack and bake until brown on bottom and top, about 10 min. Remover from oven and brush with butter.