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Thin Porridge or Gruel

A thin oatmeal gruel made by mixing oatmeal with cold water and salt, then gradually stirring into boiling water or milk.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Thin Porridge or Gruel

Ingredients

Directions

Make the porridge

  1. In a pot, bring the water or milk to a near boil.

  2. Mix the oatmeal with a little cold water and salt until smooth.

  3. Stir the oatmeal mixture into the boiling water or milk gradually.

  4. Boil for a few minutes, then skim and strain if desired.

Thin or enrich and serve

  1. For a thinner gruel, let the coarser oatmeal settle, pour off the liquid, and boil it longer.

  2. For a richer gruel, beat in one or two egg yolks mixed with a little gruel, ensuring it doesn't boil after adding the eggs.

  3. Add flavorings like sugar, nutmeg, or cinnamon as desired.

  4. Serve in bowls, with or without toasted bread.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

  1. Milk + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  2. Butter + sugartop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

  3. Milk + sugartop 18% of all pairs
    Smell alikelow
    Cooked together77,875 recipes

    Shared aroma: 2-nonenal (fatty, green).

Milk and sugar barely smell alike, yet cooks put them together in 77,875 recipes: they work on texture and structure more than aroma.

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Oatmeal
Its starch thickens the hot liquid into a porridge as it cooks.
Water or milk
Forms the liquid base; milk adds richness and softness to the finished porridge.
Egg yolks (in the method)
Enrich and thicken the gruel through their proteins when gently heated, adding richness.

The step that matters

Beating in the egg yolks. Egg yolks thicken by gently heating their proteins. If the gruel boils after the eggs go in, the yolks can curdle and turn grainy, so keep it below a boil.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.

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