Preheat oven to 450
Combine all the dry ingredients in the bowl of a food processor.
Cut the butter into chunks and pulse in food processor until the flour resembles course meal.
Add the buttermilk and mix just until combined.
Turn the dough out onto a floured board.
Gently pat the dough out until it's about 1/2" thick. Fold the dough about 5 times, gently press the dough down to 1" thick.
Use a round cutter to cut into rounds.
Gently knead the scraps together to make a few more.
Place the biscuits on a cookie sheet- if you like soft sides, put them touching each other, otherwise place 1" apart for crusty sides.
Bake for about 10-12 minutes until they are a light golden brown on top and bottom.