Chickster:
Seitan is a meat substitute made from the gluten in wheat. It's found in a lot of Oriental cooking, and is also used in some of the mainstream fake meats in the market today. It's VERY high in protein, and can take the flavor of whatever you cook it with. The thing that differs Seitan from tofu is the texture and grain, which is VERY similar to that found in REAL meat. A common nickname is "wheat meat." Some purist Vegans won't touch Seitan, because it looks too much like meat, LOL!
Originally, it used to be made with high protein flour and water and LOTS of elbow grease. The flour and water would be stirred into a dough, and then the dough would be kneaded underwater, changing the water several times, to remove the starch. These days, though, Seitan can be made with Vital Wheat Gluten, the same stuff you add to bread mixes to give the bread more texture so it will rise better. Gluten is mixed with water and seasonings, and kneaded to a sticky dough. This dough is then baked, broiled, or boiled, usually boiled, and the resulting product is Seitan.
I cheat, LOL, and dump the Gluten, water, and seasonings into my bread machine, and hit the "dough only" cycle!

~VOW