Porridge
Food · Grain · Food, Typed Supps
Made with water it is plain and modest. Made with milk it becomes a proper source of protein and calcium.
Stage by stage
- Intake (Mouth): Cooking has already softened the grain, so little chewing is needed.
- Gel formation (Stomach): Beta-glucan hydrates into a viscous gel that slows stomach emptying.
- Bile trapping (Small intestine): The gel traps bile acids, prompting the liver to draw LDL cholesterol from the blood to replace them.
- Fermentation (Colon): Remaining fibre is fermented into short-chain fatty acids by gut bacteria.
Time to effect
- Weeks: Cholesterol effects need several weeks of consistent intake at around 3g beta-glucan a day.
Allergens
None of the fourteen major allergens. Derived from what this food is, not from a product label.
Eating patterns
Fits: Vegan, Vegetarian, Pescatarian, Halal, Kosher, Gluten-free. Depends on the product: Low-FODMAP.
Satiety
160 on the satiety index, where white bread is 100 — high. Modelled from the Holt et al. (1995) measurements.
Environmental footprint
1.6 kg CO2e and 648 litres of freshwater per kg, matched to "Wheat & rye" in Poore & Nemecek (2018), Science 360.
Cost band
Cheap — roughly £2.5 per kg, as a band midpoint rather than a price.
Key nutrients
Nutrition per 100g
- Calories: 89
- Protein: 3g
- Carbohydrate: 11.4g
- of which sugars: 0.3g
- Fat: 2.9g
- of which saturated: 0.5g
- Fibre: 2.9g
- Sodium: 1mg
Food vs. supplement
Isolated fibre supplements such as psyllium act on the same viscosity mechanism and lower LDL by a similar order of magnitude. Porridge delivers the beta-glucan still embedded in the grain, alongside magnesium, manganese and, if made with milk, protein and calcium. The supplement is more precisely dosed; the porridge is a meal.
Kitchen tip
Steel-cut or rolled oats cooked briefly in milk, rather than instant sachets boiled hard, keeps both the fibre chains and the texture intact. Overnight soaking hydrates the beta-glucan without heat.
Common myth
"All porridge is a healthy low-sugar breakfast." In reality: Plain oats cooked in water or milk carry almost no sugar. Pre-sweetened and flavoured versions, and the honey or brown sugar most people stir in, can push a bowl into the same free-sugar range as a sweetened cereal.
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