Seitan
Food · Protein · Food, Typed Supps
Seitan is basically wheat's protein, isolated and cooked into a chewy, meat-like food - high in protein, but it's missing enough of one building block to be a "complete" protein on its own.
Stage by stage
- Chewing (Mouth): Chewing mechanically breaks apart seitan's dense, elastic gluten network, and saliva begins loosening its tightly bound protein structure.
- Gastric Breakdown (Stomach): Stomach acid and pepsin denature the gluten proteins, unwinding their cross-linked structure so digestive enzymes can reach individual peptide bonds.
- Amino Acid Absorption (Small Intestine): In the small intestine, pancreatic and brush-border enzymes cleave the protein into amino acids and short peptides that are absorbed into the bloodstream, though gluten's proline-rich sequences digest somewhat more slowly than most animal proteins.
- Muscle Protein Synthesis (Muscle Tissue): Absorbed amino acids circulate to muscle and other tissues to support protein synthesis and repair, though seitan's low lysine content means it works best paired with a lysine-rich food like legumes.
Timing
Seitan works well as a savory protein source at any meal; pairing it with lysine-rich foods like beans, lentils, or quinoa improves its overall protein quality.
Time to effect
- Hours to weeks: Amino acids from seitan enter the bloodstream within roughly 1-2 hours of digestion, but building measurable muscle or strength benefits from regular seitan consumption takes several weeks of consistent intake alongside resistance training.
Allergens
Contains: Gluten. Derived from what this food is, not from a product label.
Eating patterns
Fits: Vegan, Vegetarian, Pescatarian, Halal, Kosher, Keto. Depends on the product: Low-FODMAP.
Satiety
211 on the satiety index, where white bread is 100 — very high. Modelled from the Holt et al. (1995) measurements.
Cost band
Mid — roughly £7 per kg, as a band midpoint rather than a price.
Key nutrients
Nutrition per 100g
- Calories: 106
- Protein: 21.2g
- Carbohydrate: 3.5g
- of which sugars: 0g
- Fat: 1.2g
- of which saturated: 0.2g
- Fibre: 0.6g
- Sodium: 15mg
Food vs. supplement
Seitan is a dense, whole-food source of protein plus selenium and iron, but because wheat gluten is low in lysine, it is not a complete protein on its own the way most animal proteins or soy are.
Kitchen tip
Simmer seitan in a seasoned broth (soy sauce, garlic, ginger, or miso) before searing - it has little inherent flavor of its own and readily absorbs marinades.
Common myth
"Seitan is a complete protein just like meat." In reality: Seitan is essentially isolated wheat gluten, which is low in the essential amino acid lysine, giving it a protein quality score well below meat, dairy, or soy; it becomes a more complete protein source only when paired with legumes or other lysine-rich foods. Seitan also contains gluten and must be avoided entirely by anyone with celiac disease, wheat allergy, or non-celiac gluten sensitivity.
Recipes that use it
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