Whole-Wheat Soda Bread
This variation is known as brown bread in Ireland. The dough will be sticky and you may need to add a small amount of all-purpose flour as you mix it.
Follow the recipe for Irish Soda Bread, reducing the unbleached all-purpose flour to 1½ cups (7½ ounces) and the cake flour to ½ cup (2 ounces) and increasing the sugar to 3 tablespoons. Add 1½ cups (8¼ ounces) whole-wheat flour and ½ cup toasted wheat germ with the flours, sugar, baking soda, cream of tartar, and salt in step 1.