Vital wheat gluten is a protein naturally found in wheat. Adding extra improves the texture of whole-grain breads. Look for it at health food stores or large supermarkets; Bob's Red Mill is one common brand.
*To Make Hot Dog or Hamburger Buns
This recipe can morph into hot dog or hamburger buns, too. A full batch of dough makes 12 buns or a single sandwich loaf and six buns. In Step 4: Divide the ball of dough into eight pieces. Shape each into a plum-size ball using the same stretch-and-tuck technique. For hamburger buns, press the balls to flatten. For hot dog buns, stretch them into 6-inch ropes. Place 2 inches apart on greased baking sheets. Let rest, loosely covered, for 40 minutes (20 minutes if you are using fresh, unrefrigerated dough). In Step 5: Before baking, brush the bun tops with melted butter or egg wash (an egg lightly beaten with 1 tablespoon water). Bake at 350° for about 20 minutes or until richly browned and firm to the touch.