Duck Breast
Food · Protein · Food, Typed Supps
Duck breast looks like chicken but acts more like steak — it's poultry that's unusually rich in iron.
Stage by stage
- Chewing & Breakdown (Mouth & Esophagus): Chewing mechanically breaks down duck breast's dense muscle fibres, priming enzymes to begin unlocking its protein and B vitamins.
- Protein Digestion (Stomach): Stomach acid and pepsin denature the muscle proteins and free heme iron bound in myoglobin for absorption further along the gut.
- Nutrient Absorption (Small Intestine): The small intestine absorbs amino acids, heme iron, zinc, and B vitamins like niacin and B12 through a dedicated heme transporter that's markedly more efficient than plant-based nonheme iron absorption.
- Iron & Muscle Delivery (Bloodstream & Muscle): Iron travels via the bloodstream to bone marrow to build red blood cells, while amino acids reach muscle tissue to support repair and growth.
Timing
Duck breast is typically eaten as part of a full meal; pairing it with vitamin-C-rich vegetables at the same sitting can further boost absorption of nonheme iron from other foods on the plate.
Time to effect
- Weeks: Noticeable improvements in iron status, such as ferritin levels or reduced fatigue, from regularly eating iron-rich foods like duck breast typically take about 4-12 weeks of consistent intake.
Allergens
None of the fourteen major allergens. Derived from what this food is, not from a product label.
Eating patterns
Fits: Keto, Gluten-free. Depends on the product: Halal, Kosher, Low-FODMAP.
Satiety
222 on the satiety index, where white bread is 100 — very high. Modelled from the Holt et al. (1995) measurements.
Environmental footprint
9.9 kg CO2e and 660 litres of freshwater per kg, matched to "Poultry meat" in Poore & Nemecek (2018), Science 360.
Cost band
Pricey — roughly £22 per kg, as a band midpoint rather than a price.
Key nutrients
Nutrition per 100g
- Calories: 91.5
- Protein: 21.2g
- Carbohydrate: 0g
- of which sugars: 0g
- Fat: 0.6g
- of which saturated: 0.2g
- Fibre: 0g
- Sodium: 60mg
Food vs. supplement
Duck breast delivers highly bioavailable heme iron alongside zinc, complete protein, and B-complex vitamins in one food matrix — a combination no single supplement replicates.
Kitchen tip
Score the fat cap, render it slowly skin-side down in a cold pan, and rest the meat before slicing to keep it juicy while controlling how much rendered fat stays on the plate.
Common myth
"Duck is basically just a fattier version of chicken breast — same lean white meat." In reality: Duck breast is classified as poultry by taxonomy, but its flight-adapted muscle carries far more myoglobin and heme iron than chicken breast — skinless duck breast can run several times higher in iron per 100g than skinless chicken breast — so nutritionally it behaves more like a lean red meat, while most of its fat sits in a removable skin layer rather than marbled through the flesh.
Recipes that use it
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