Seitan is made from vital wheat gluten, a flour that is made from the main protein found in plants - gluten. Oftentimes, seasonings such as salt, pepper and dried herbs are also added to give it some flavor. As seitan consist of mainly gluten, it has a really chewy and firm texture, making it the perfect meat substitute in many plant based dishes. It is also incredibly high in protein, containing a whopping 21g of protein per ounce.