1 cup all-purpose flour
2 1/4 teaspoons baking powder
1/4 teaspoon salt
4 tablespoons frozen grated butter
1/4 cup buttermilk, approximately
1 tablespoon milk, for glazing the tops of the scones, optional
Preheat oven to very hot 475°F.
Triple sift the dry ingredients into a large bowl.
Rub the frozen grated butter into the dry ingredients until it resembles very coarse bread crumbs with some pea-sized pieces if you want flaky scones or until it resembles coarse beach sand if you want tender scones.
Add nearly all of the liquid at once into the rubbed-in flour/fat mixture and mix until it just forms a sticky dough (add the remaining liquid if needed). The wetter the dough the lighter the scones will be.
Turn the dough out onto a lightly floured board, lightly flour the top of the dough. To achieve an even homogeneous crumb to your scones knead very gently about 4 or 5 times (do not press too firmly) the dough until it is smooth. To achieve a layered effect in your scones knead very gently once (do not press too firmly) then fold and turn the kneaded dough about 3 or 4 times until the dough has formed a smooth texture. (Use a floured plastic scraper to help you knead and/or fold and turn the dough if you wish.)
Pat or roll out the dough into a 6 inch by 4 inch rectangle by about ¾ inch thick. Using a well-floured 2-inch biscuit cutter, stamp out without twisting six 2-inch rounds, gently reform the scraps into another ¾ inch layer and cut two more scones (these two scones will not raise as well as the others since the extra handling will slightly toughen the dough). Or use a well-floured sharp knife to form squares or wedges as you desire.
Place the rounds just touching on a baking dish if you wish to have soft-sided scones or place the rounds spaced widely apart on the baking dish if you wish to have crisp-sided scones. Glaze the tops with milk if you want a golden color on your scones or lightly flour if you want a more traditional look to your scones.
Bake in the preheated very hot oven for about 10 minutes (check at 8 minutes since home ovens at these high temperatures are very unreliable) until the scones are well risen and are lightly colored on the tops. The scones are ready when the sides are set.
Immediately place onto cooling rack to stop the cooking process, serve while still warm.