In the bowl of your stand mixer, add all the ingredients (except onion, pepper, and chives) and combine on low (speed 1) for one minute.
Knead (on speed 2) for 3-4 minutes. Scrape the edges with a spatula and combine.
Shape the dough and add to a medium size bowl, cover with plastic wrap and let it ferment for an hour.
Transfer the dough to a sheet of aluminum paper and cover.
Pour 1 cup of water into the Instant Pot and arrange the steamer basket on the bottom.
Place the seitan in and put the lid on.
Steam for 30 minutes.
Remove the seitan from the Instant Pot and transfer to a cutting board.
Cut the seitan in thin pieces.
In a large skillet, add oil, chopped seitan, chopped onion and bell pepper and sauté.
Optional- Add 4 tablespoons of soy sauce and other seasonings of your liking.
Add the chives.
Serve with rice.