½ cup (1 stick) cold unsalted butter, cut into ½-inch pieces
2 cups well-shaken buttermilk
Instructions
Preheat the oven to 400 degrees.
Butter a 9-inch round cake pan.
In a large bowl, combine flours, wheat germ, salt, sugar, baking soda and cream of tartar.
Using a pastry blender or your fingers, blend in the cold butter until the mixture resembles coarse meal.
Make a well in the center of the flour mixture, add the buttermilk and stir until a soft dough forms.
Turn dough out onto a lightly floured surface and gently knead until smooth, about three minutes. (Add a tablespoon or so of flour if your dough is too sticky.)
Gently press the dough into the prepared cake pan.
Cut an X, ½ inch by 5 inches long, into the top of the dough with a sharp knife.
Bake in the preheated oven for 30 to 40 minutes until light brown and the loaf sounds hollow when tapped.
Cool in pan for 10 minutes. Remove loaf from pan and cool for 1 hour on a wire rack.