In a mixing bowl, whisk the vital wheat gluten, nutritional yeast, and spices.
Mix in the vegetable broth and soy sauce until well combined.
Knead the mixture for 4-6 minutes (either by hand or using a stand mixer with the hook attachment).
Form into a rectangular patty that is about 3/4″ thick.
In a medium-sized saucepan, bring the ingredients for the broth to a boil.
Place the seitan patty into the broth (making sure it is fully covered but it will float to the top) and bring the mixture to a simmer.
Cover and allow to cook for about an hour, flipping every 15 minutes.
Once it is done, allow the seitan to cool for at least 30 minutes in the broth.