From Vegan Planet:
1 large onion, quartered, 3/4c tamari (or other soy sauce)
1 large carrot, coarsely chopped, 2 bay leaves
1 celery rib, coursely chopped, 16c water, or more (as needed)
2 crushed garlic cloves, 4 pounds whole wheat flour (9c)
1. In a large pot, combine 12 c water and everything else but the flour. Bring to a boil, and then simmer as you prepare Seitan
2. Place the flour in a large bowl, add the remaining 4 cups of water, and stir to form a firm dough, adding a little more water if the dough is too dry. Knead the dough on a flat work surface until it is smooth and elastic, about 10 minutes. Place the dough in the bowl and add worm water to cover completely. Let rest for twenty minutes.
3. Place the bowl in the sink and knead until water turns white (that is the starch). Drain the milky water, then cover with fresh water and knead again until the water turns white. Drain. Repeat this process until the water is clear. The contents of the bowl will be quite loose and messy, but you will soon have a smooth ball of wheat gluten, or raw seitan.
4. Divid the seitan into smaller pieces and add to the simmering stock. simmer, uncovered, for 1 hour, keeping the seitan submerged. DO NOT BOIL. When the seitan is cooked, remove from the pot and place on a baking sheet to cool. to store in the fridge, place the seitan and its stock in a tightly covered bowl and keep for 4 to 5 days. You may also freeze the seitan, in its stock or not, for several weeks.
Phew! My hands need a break now!
there are alot of other recipes on the web, too.
Missy