Preheat your oven to (230 C) 450 °F
Using a sieve or sifter combine dry ingredients and sift into a mixing bowl.
Pour the dry ingredients into a food processor.
Cut the butter into small cubes.
Add the butter to the food processor and pulse briefly , until you have a coarse crumble.
Pour the mixture out onto a silicone pastry mat.
Make a well in the center of the crumbs.
Add the milk and work it into the dough. Don't overwork the dough as this can make the biscuits dry and hard.
Form the dough into a rectangle and slightly flatten it with a rolling pin.
Using a 2.5 to 2.75-inch biscuit cutter, cut into 12 equally sized biscuits.
Place in a springform pan or large cast iron skillet.
Bake for 10 to 12 minutes or until golden.
Serve hot.