Blue Grenadier

Food · Protein · Food, Typed Supps

Lean white fish, and baking or steaming it changes almost nothing except how much water is left in.

Stage by stage

Intake (Mouth): Soft, low-collagen flesh flakes apart with minimal chewing.
Denaturation (Stomach): Acid unfolds the muscle protein and pepsin begins cleaving it into peptides.
Absorption (Small intestine): Amino acids and selenomethionine are absorbed, along with a small amount of fat.
Use (Muscle and tissue): Amino acids support tissue repair; selenium is built into antioxidant enzymes.

Time to effect

Hours: Amino acids from the meal reach circulation within one to three hours.

Allergens

Contains: Fish. Derived from what this food is, not from a product label.

Eating patterns

Fits: Pescatarian, Kosher, Keto, Gluten-free. Depends on the product: Halal, Low-FODMAP.

Satiety

213 on the satiety index, where white bread is 100 — very high. Modelled from the Holt et al. (1995) measurements.

Cost band

Mid — roughly £11 per kg, as a band midpoint rather than a price.

Key nutrients

Complete protein
Selenium
Vitamin D
Iodine

Nutrition per 100g

Calories: 84
Protein: 18g
Carbohydrate: 0g
of which sugars: 0g
Fat: 1.2g
of which saturated: 0.2g
Fibre: 0g
Sodium: 63mg

Food vs. supplement

For selenium this genuinely competes with a supplement — one portion covers most of a day's requirement, in the well-retained selenomethionine form. For omega-3 it does not compete at all, and someone eating white fish and assuming they have covered EPA and DHA has not.

Kitchen tip

Steam or bake to just-opaque. This fillet has very little fat to buffer overcooking, so the window between cooked and dry is short, and the moisture it loses is what accounts for the difference between the raw and cooked entries in this family.

Common myth

“Eating fish means you are getting omega-3.” In reality: Only oily fish is a meaningful omega-3 source. Blue grenadier is lean by design, and its value is protein and selenium at low energy density rather than fats.