I have never eaten challah bread before, but have heard it makes wonderful french toast, so I had to try making some. I used a whole wheat (well, half whole wheat) recipe from King Arthur Flour and it is delicious! It tastes a little like a mild sweet hawaiian bread. Visit the King Arthur site for the recipe, but feel free to check out a few hints below (as the original recipe may leave you with dry bread).
-Add 1.5 Tbsp orange juice (to combat any bitterness from the whole wheat flour)
-The recipe calls for 2 C bread flour & 2 C whole wheat pastry flour – this is too much! Start with 1.5 C of each, and sprinkle in additional if necessary (you want the dough to have just the slightest bit of tackiness).
-A bread machine works beautifully for combining/kneading and the first rise – just set on the dough cycle!
-Note, I accidentally diluted my egg wash a bit too much, so yours may turn out with a shinier finish.