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Flour Gruel

A simple gruel made by boiling flour with milk and water, then seasoning with salt and sugar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 10 ingredients
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Why it works: Milk and potato are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 3,611 recipes. Both carry (e,z)-2,6-nonadienal, which smells cucumber, melon. The science ↓

Flour Gruel

Oven, in the book's wordsA cool oven

Ingredients

Directions

Prepare the flour

  1. Tie the flour into a cloth, leaving room for it to swell, and boil steadily for 4 to 5 hours.

  2. Remove from the cloth and place on a plate in a cool oven to dry thoroughly.

Make the gruel

  1. When ready to use, grate 1 tablespoon of the dried flour and mix with a little cold milk.

  2. Add 1 pint of boiling milk and a little salt, then boil for 5 minutes.

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 + potatotop 9% of all pairs
    Smell alikemoderate
    Cooked together3,611 recipes

    Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).

  2. Flour + milktop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Flour + sugartop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  4. Flour + potatotop 15% of all pairs
    Smell alikemoderate
    Cooked together5,355 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

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

Flour and milk barely smell alike, yet cooks put them together in 78,219 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

Flour
Boiled and dried, its starch thickens the milk into a smooth gruel.
Milk
Adds liquid, body and richness to the gruel.

The step that matters

Drying the boiled flour thoroughly. Flour that is still damp will not grate into a fine, dry powder and can clump when mixed with milk. Thorough drying in a cool oven removes the moisture so the grated flour disperses evenly and thickens smoothly.

Swap the potato

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

  1. Arrowrootfits better
  2. Sweet potatofits better
  3. Beetrootfits about as well
  4. Potatothe original

Fit is the average pairing score against flour, milk, 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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