I discovered more or less by accident (OK, I like to experiment :-) that
adding brewer's yeast to whole wheat bread produces a surprisingly
orange, rather spongy, and slightly sour-tasting bread (reminiscent of
sourdough). It doesn't take much yeast, either, like 1/4 to 1/2 cup.
Brewer's yeast is potent stuff. It's available in health food stores
(if no where else), in fairly large quantities, as a vitamin supplement.
It's also strangely pleasing sprinkled on popcorn. :-)
PS: Thanks for all the advice and recipes saved in the archives,
from someone new to bread making and the mailing list.