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Barley Gruel

A simple barley gruel made with barley, water, port wine, lemon rind, 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

Cook the barley

  1. Wash the barley well and boil it in ½ pint of water for 30 minutes.

  2. Pour away the water, then add 1 quart of fresh boiling water.

  3. Boil until the liquid is reduced by half, then strain it off.

Flavour and store

  1. Add the port wine, sugar, and lemon rind, then simmer for 5 minutes.

  2. Store in a clean jug and warm as needed.

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. Barley + port winetop 16% of all pairs
    Smell alikemoderate
    Cooked together45 recipes

    Shared aroma: 2,3-pentanedione (butter, sweet).

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

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

  4. Port wine + lemontop 21% of all pairs
    Smell alikemoderate
    Cooked together1,100 recipes

    Shared aroma: 1-octen-3-ol (mushroom, earthy).

  5. 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

Barley
Its starch thickens the liquid as it cooks, giving the porridge its body.
Port wine
Adds sweetness, acidity and deep fruity flavour to the finished porridge.
Lemon rind
Its oils add a bright citrus aroma without adding much liquid.

The step that matters

Reducing the liquid by half. Reducing concentrates the starch and flavour of the cooking liquid. Stopping too early leaves it thin, while boiling too long can make it stick, scorch or become too thick.

Swap the lemon

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

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

Fit is the average pairing score against barley, port wine, 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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