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Boiled green beans with butter, onion, salt, and flour.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Cut Beans

Ingredients

Directions

Prepare

  1. Remove string from green beans and cut them into thin lengthwise pieces.

  2. Wash the beans and mix with butter, salt, chopped onion, and a little water.

Cook

  1. Boil until done, adding water as necessary.

  2. Mix a little flour with the beans and boil together.

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

    Shared aroma: isobutyraldehyde (malty, green).

  2. Green beans + oniontop 13% of all pairs
    Smell alikemoderate
    Cooked together334 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  3. Butter + oniontop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

  4. Onion + flourtop 17% of all pairs
    Smell alikemoderate
    Cooked together32,460 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Green beans + flourtop 20% of all pairs
    Smell alikemoderate
    Cooked together101 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

Green beans
Provide the main vegetable body and fresh, tender texture of the dish.
Butter
Adds richness and fat, coating the beans and carrying flavor.
Onion
Adds savory aroma and mild sweetness as it softens during cooking.
Flour
Thickens the cooking liquid, helping it cling to the beans.

The step that matters

Adding flour to the beans. Flour must be mixed in evenly before the final boil; otherwise it can clump and form lumps instead of thickening the liquid smoothly. Boiling it briefly cooks out its raw starchy taste.

Swap the green beans

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

  1. Chivefits better
  2. Leekfits better
  3. Shallotfits better
  4. Green beansthe original

Fit is the average pairing score against butter, onion, flour. 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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