Preheat oven to 450
Mix dry ingredients: Flour, baking soda, baking powder, and salt, stir to combine
Grate one stick of frozen butter
Add butter to dry ingredients and toss to coat, breaking up any clumps
Pour in the buttermilk.
Stir gently until just moistened. The dough will be wet and shaggy.
Turn dough out onto a flat service that has been dusted with flour
Dust the top of the dough with more flour. Gently pat dough into a rectangle about 1/2 inch thick. Do NOT roll with a rolling pin.
Fold the dough into thirds and flatten again
Repeat this 3 more times using more flour as needed. The last time pat the dough to about 1 inch thick.
Cut dough with a 2.5 inch cookie cutter. Do not twist the cookie cutter as you bring it out of the dough.
Gently pat together the leftover dough and cut one or two more biscuit from that
Place dough into a greased 10 inch iron skillet.
Put in the oven and bake for 18 minutes or until the tops are nice and golden brown.
Remove from skillet and Enjoy!