Seitan: What Is Seitan? Nutrition, Protein and Who Should Skip It

Seitan is a chewy, meat-like food made almost entirely from wheat gluten, the main protein in wheat. So what is seitan in plain terms? It is wheat dough with the starch washed out, or vital wheat gluten flour mixed with liquid, then simmered, steamed or baked. Because it is mostly protein, seitan nutrition looks very different from bread, and seitan protein per gram rivals many meats. It is also the one plant protein that people with celiac disease or a wheat allergy must skip. This guide covers how seitan is made, USDA values, how it compares with tofu and tempeh, and label points to check.

Peptide Labs does not sell seitan or wheat gluten. This article is general nutrition information, not medical advice.

What is seitan? A meat substitute made from wheat gluten

Gluten is the stretchy protein network that forms when wheat flour meets water. Seitan concentrates it. There are two common kitchen methods:

1. Washing method: knead a wheat flour dough, rest it, then rinse and knead it under water until most of the starch washes away and an elastic mass of gluten remains.
2. Vital wheat gluten method: mix vital wheat gluten flour, which is gluten already separated and dried, with water or broth and seasonings, knead briefly and shape.
3. Cooking: simmer the dough gently in broth, steam it or bake it wrapped; vigorous boiling tends to make it spongy.

Many recipes add soy sauce, nutritional yeast, spices or bean flour, and packaged seitan is sold as strips, cutlets, crumbles or deli-style slices. Those extras change the nutrition, which is why the label matters more for seitan than for a single-ingredient food.

Seitan nutrition and seitan protein: USDA values

USDA’s SR Legacy database has no entry named seitan. The closest labeled entry is vital wheat gluten (FDC 168147), the dry flour seitan is made from. The table sets it next to firm tofu prepared with calcium sulfate (FDC 172475) and tempeh (FDC 174272), all per 100 grams, with percent Daily Values (%DV) based on FDA reference amounts.

Read the first column with care. It describes dry flour, not the finished food. When vital wheat gluten is mixed with liquid and cooked, water adds weight, so a 100-gram piece of prepared seitan has much less protein and fewer calories than 100 grams of the flour; the exact figure depends on the recipe. For a smaller reference amount, 1 ounce (28 g) of vital wheat gluten works out to about 104 calories and 21 grams of protein, or 42% of the Daily Value, using the USDA per-100-gram values. SR Legacy lists no standard portion for this entry.

A few nutrition points follow from the data. Seitan protein comes with very little fat and almost no fiber, unlike beans and lentils. USDA lists meaningful iron and selenium for vital wheat gluten; our foods high in iron guide explains how plant (non-heme) iron differs from the iron in meat. And SR Legacy lists no vitamin B12 for it, so people on plant-based diets look to fortified foods or supplements, as our B12 foods guide describes. SR Legacy also gives no amino acid breakdown for vital wheat gluten, so this guide does not rate its protein quality.

Seitan vs tofu and tempeh

All three show up as plant-based proteins, but they come from different crops and suit different people. Tofu and tempeh are soy foods; seitan is wheat. In USDA data, firm tofu made with calcium sulfate is a standout for calcium because the coagulant itself contains calcium, and tempeh, a fermented whole-soybean cake, has more fat and carbohydrate than tofu. Seitan has the leanest profile of the three and the firmest, most meat-like chew. Our tofu guide and tempeh guide cover those foods in depth, and the high-protein foods guide ranks other plant options such as lentils and edamame.

Allergies decide the choice for some households. FDA counts both wheat and soybeans among the nine major food allergens that must be declared on packaged food labels. Someone with a soy allergy may use seitan, while someone with a wheat allergy or celiac disease cannot; and because many seitan recipes use soy sauce, a seitan product can contain both.

Who should skip seitan: celiac disease and wheat allergy

NIDDK describes celiac disease as a chronic digestive and immune disorder in which gluten damages the small intestine, and it names wheat, barley and rye as the grains that contain gluten. Seitan is essentially concentrated gluten, so it is off the menu for anyone with celiac disease. The Celiac Disease Foundation lists seitan meat substitutes among foods to avoid or check, and it notes that traditional soy sauce, a common seitan seasoning, also contains gluten.

Wheat allergy is a separate condition from celiac disease, but the advice on seitan is the same: wheat is a major food allergen, so it will be declared on the label. If you suspect a problem with gluten, see a clinician before changing your diet. NIDDK says doctors do not recommend starting a gluten-free diet before testing, because removing gluten can affect the results.

People who avoid gluten for other reasons should also know that seitan cannot be made gluten-free; a “gluten-free” label under the FDA rule means less than 20 parts per million of gluten, which rules seitan out by definition. Our grain guides to barley, bulgur, couscous and farro cover other gluten-containing foods.

Store-bought seitan: what to check on the label

• Sodium: plain vital wheat gluten is very low in sodium in USDA data, but packaged seitan is often simmered in salty broth or soy sauce; compare %DV per serving. Our lower-sodium eating guide explains the label thresholds.
• Protein per serving: the label gives the real figure for the finished product, which is lower per gram than the dry flour.
• Allergen statement: expect wheat; look for soy, and for sesame if sesame oil is used.
• Added ingredients: oils, sugars, starches and bean flours change calories and fiber.
• Deli-style slices: plant-based cold cuts are processed foods too; the deli meat guide compares a USDA meatless slice with meat versions.

Cooking with seitan

Seitan takes on the flavor of its cooking liquid and marinade. Homemade seitan keeps in the refrigerator in its broth, and it can be sliced for sandwiches, cubed for stir-fries or shredded for tacos. Searing cooked seitan in a hot pan crisps the outside. If you make it from flour, a simple dough of vital wheat gluten, broth and spices is the quickest route; washing a flour dough takes longer but uses only flour and water. Pair it with vegetables, grains or beans, such as chickpeas or black beans, for a fuller plate. If you are moving toward more plant-based meals, our flexitarian diet guide describes that pattern.

Frequently Asked Questions

Questions about a label? Contact us or read our Buyer’s Guide. Food comes first; follow the label and ask a healthcare provider before starting a supplement, especially if you take medicines, are pregnant or have a food allergy. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Last reviewed October 2026.

Related guides: Deli Meat: Is Deli Meat Healthy? Lunch Meat Nutrition and Safety, Tofu: USDA Nutrition, Protein, Calories and Types of Tofu, Tempeh: What It Is, USDA Nutrition, Protein and Tempeh vs Tofu.