Mix all the dry ingredients together in a large bowl.

Make a well in the center and pour in the buttermilk.

Work it all together until a soft dough forms. If it's too sticky, add a little more flour.

Turn it out onto a flour board and gently knead 5 or 6 times, then shape it into a large ball, about 6 inches around.

Score an X in the top and place it on a parchment paper lined cookie sheet to rest.

When you remove the coddle from the oven, turn the heat up to 400 degrees. Bake the bread for 15 minutes, then reduce heat to 350 and cook for another 15 to 20 minutes. The bread should be browned and sound hollow when tapped.

Remove it from the oven, rub the top with butter and let it cool about 5 minutes before cutting. 

Serve the coddle in a bowl with some warm bread on the side.