Take wheat flour, salt and water in a bowl and knead to a stiff dough. Now cover it with water and let it sit for 1 hour.
Now knead it well and get rid off all the starch. it will be easy if you do this under a sink. Keep straining the water and add fresh water and knead it well. The portion will get much smaller. But keep doing this till the water runs almost clear.
You can easily do this if you use a strainer and keep the water flowing.
Now what you will be left is the gluten. Now strain this and cut it into pieces.
Now take veg stock and all ingredients in a sauce pan and bring it to a boil. Once it boils, add seitan and cook for 20 mins or so.
Now drain this and store it in a air tight container.
You can use this in stir fries, curries and grill them. This stay good for a week in fridge.