Preheat oven to 425.

Mix dry ingredients in a bowl.

Make a well in the center of the flour mixture. Pour 1 3/4 cups of buttermilk into the well. Stir the flour gradually in, until you have a shaggy dough. Add up to 1/4 cup more buttermilk, if you need it.

Use your hand to gently knead the dough into a ball.

Turn the ball out onto a greased baking sheet. Press it gently into a disc, 1 1/2 inches thick. Slash a cross into the disc, about 3/4 of an inch deep.

Bake at 425 for 30 minutes. Turn oven heat down to 350, bake for another 15 minutes.

Let cool completely before slicing.