1cupbuttermilkyou may need a little more if the dough is too dry
Preheat oven to 450 degrees. Place the butter in the freezer while the oven is heating up.
Meanwhile, in a medium bowl, combine flour, baking powder, baking soda and salt and mix well.
Next, remove the butter from the freezer and grate it with the large holes of a cheese grater. Add the butter to the flour mixture and use your hands to coat all of the butter with flour, breaking up any clumps of butter that may form.Add almost all of the buttermilk and use a wooden spoon to bring together into a fairly dry, loose dough. If it won't come together, add the rest of the buttermilk.
Turn the dough out on to a flour dusted work surface. Pat the dough out into a rectangular shape about a half inch thick, then fold it over itself like a jelly roll. Repeat this process twice more, leaving the biscuit dough an inch tall on the last pass, then you're ready to cutDip your biscuit cutter in flour to avoid sticking. Press straight down to cut the biscuits. You can bring the scraps together and get a few more biscuits if you like.
Place the biscuits on an ungreased baking sheet and transfer into the hot oven for 12 to 15 minutes, or until the biscuits are browned on the top and cooked in the middle.Remove from the oven, and enjoy!