In a food processor, blend together the flour, salt and baking powder.
Pulse in the cold butter pieces.
Do not over incorporate the butter into the flour; similar to making a flaky pastry, small pieces of butter should be visible in the flour.
Transfer this mixture from the food processor into a large mixing bowl and make a well in the center.
Pour in the buttermilk; working very quickly with a wooden spoon, fold the dry mixture through the buttermilk only until the flour disappears, then stop immediately.
Drop the sticky dough onto a well floured counter top or bread board.
Sprinkle the top of the dough with additional flour as well as flouring your hands to handle the dough.
It is not necessary to use a rolling pin for these biscuits as the dough is soft enough to pat it out gently with floured hands; pat to a thickness of about 1-½ inches.
Using a sharp 3-inch biscuit cutter, cut the biscuits out and place them on a parchment paper lined baking sheet.
Place the sheet of unbaked biscuits into the freezer for several hours or overnight to freeze them solid; when frozen, store in an airtight container in the freezer until needed.