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Barley Gruel

A simple barley gruel made by soaking barley, boiling with water, salt, milk sugar, then thickening with butter and flour.

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 ↓

Barley Gruel

Ingredients

Directions

Prepare the barley

  1. Soak the pearl barley in water.

  2. Boil the soaked barley with 3 pints of water.

  3. Add salt and milk sugar.

  4. Let it boil slowly for 1 hour.

  5. Strain the gruel.

Thicken and serve

  1. Heat the butter in a pan.

  2. Thicken with mixed flour.

  3. Gradually add the barley gruel to the pan.

  4. Let it boil for a few minutes.

  5. Serve hot.

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 + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Barley + flourtop 13% of all pairs
    Smell alikemoderate
    Cooked together582 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Barley + milktop 14% of all pairs
    Smell alikemoderate
    Cooked together598 recipes

    Shared aroma: ethyl octanoate (fruity).

  5. Milk + flourtop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Butter and flour barely smell alike, yet cooks put them together in 124,287 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

Pearl barley
Provides the main body and starchy base of the gruel as it simmers.
Mixed flour
Thickens the liquid so the gruel becomes smooth and spoonable.
Butter
Adds richness and a smooth mouthfeel to the finished gruel.
Milk sugar
Adds gentle sweetness and a mild, milky flavour.

The step that matters

Adding the barley gruel to the butter and flour mixture. Adding the liquid gradually while stirring keeps the flour dispersed, so lumps do not form and the gruel thickens evenly.

“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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