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Barley Gruel

A simple barley gruel made with pearl barley, water, lemon rind, lemon juice, and sugar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Barley and lemon work together. They rank in the top 13% of all ingredient pairs, and cooks put them together in 484 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Barley Gruel

Ingredients

Directions

Prepare

  1. Rinse the pearl barley under cold water for a few minutes.

  2. Strain the barley and add it to 1 quart of cold water in a pot.

Cook and flavor

  1. Bring to a boil and then reduce heat to simmer for 1 hour.

  2. Add the lemon rind and lemon juice, along with the sugar, and stir well.

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. Barley + lemontop 13% of all pairs
    Smell alikemoderate
    Cooked together484 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  2. Lemon + sugartop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

  3. Barley + sugartop 21% of all pairs
    Smell alikemoderate
    Cooked together755 recipes

    Shared aroma: beta-damascenone (apple, rose).

Lemon and sugar barely smell alike, yet cooks put them together in 53,532 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
Its starch thickens the water as it simmers, giving the gruel body.
Lemon juice
Adds acidity that brightens the flavor and balances the sweetness.
Sugar
Adds sweetness that rounds out the lemon and the grain flavor.

The step that matters

Simmering the barley. Barley needs a long, gentle simmer for its starch to release and the grains to soften. Boiling hard can break the grains apart and make the texture uneven, so keep the heat low once it boils.

Swap the lemon

How well each one fits the dish's main ingredients (barley, sugar):

  1. Vanillafits better
  2. Figfits better
  3. Raisinfits better
  4. Lemonthe original

Fit is the average pairing score against barley, sugar. Candidates are from the same food group and used in at least 100 recipes.

“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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