2 12 cups flour
1 cup whole wheat flour
1 teaspoon baking soda
1 teaspoon salt
2 tablespoons butter, at room temperature
1 14 cups buttermilk
1 tablespoon flour, for dusting
Preheat the oven to 400*. Grease a baking sheet. Sift together the flours, baking soda and salt. Make a well in the center and add the butter and buttermilk. Working from the center, stir to combine the ingredients until a soft dough is formed. Place on the baking sheet. Cut a cross on the top with a sharp knife and dust with flour. Bake until brown, about 40-50 minutes. Transfer to a wire rack to cool.