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Meatless Soup

A soup made with water, onions, celery, butter, and bread rolls, seasoned with salt and pepper.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Pepper and celery match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 16,012 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓

Meatless Soup

Ingredients

Directions

The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare

  1. Bring 2 quarts of water to a boil.

  2. Add 2 chopped onions, 2 baker's rolls, salt, and pepper.

Cook

  1. Add 1 head of chopped celery and ½ cup of butter.

  2. Boil for 30 minutes.

Brown the rolls

  1. If the rolls are not brown enough, place them in a 400°F (200°C) oven for a few 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. Pepper + celerytop 5% of all pairs
    Smell alikestrong
    Cooked together16,012 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

  2. Onion + celerytop 7% of all pairs
    Smell alikemoderate
    Cooked together18,518 recipes

    Shared aroma: guaiacol (smoky, sweet).

  3. Onion + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

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

  4. Onion + buttertop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

  5. Pepper + buttertop 21% of all pairs
    Smell alikemoderate
    Cooked together85,593 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Onions
Soften and turn sweet and aromatic as they simmer in the broth.
Baker's rolls
Break down and absorb liquid, thickening the soup with body.
Celery
Adds savory, aromatic flavor as it cooks in the broth.
Butter
Adds fat for richness and a smoother mouthfeel.

The step that matters

Browning the rolls in the oven. Browning, a Maillard reaction driven by dry heat, gives toasted, savory flavor and color. Heat that is too high or too long can scorch the rolls and make the soup bitter, so check them within a few minutes.

Swap the onion

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

  1. Carrotfits better
  2. Capsicumfits better
  3. Mustardfits better
  4. Onionthe original

Fit is the average pairing score against pepper, celery, butter. 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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