Reprinted from Vegan On A Budget © 2020 by Nava Atlas, with permission from Sterling Epicure. Photo by Nava Atlas.
Heat the oil and soy sauce in a stir-fry pan or large skillet. Add the seitan and stir-fry for 5 to 6 minutes, or until touched with golden-brown spots here and there. Transfer to a bowl and set aside.
Add the broccoli, bell peppers, and scallions to the same pan, with a little water to keep the vegetables moist. Stir-fry for 3 to 4 minutes, or until the vegetables are just tender-crisp.
Return the seitan to the pan, along with the teriyaki or Korean barbecue marinade and ginger. Stir together with the vegetables, then stir-fry for just a minute or so longer.
Serve at once over cooked rice or noodles. Pass around additional teriyaki or Korean barbecue marinade for seasoning individual portions, as well as the sriracha, if desired.