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Tomato Soup

A simple soup made from tomatoes, water or stock, butter, flour, salt, pepper, and cream or milk.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Tomato Soup

Why it works: Tomato and pepper are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 17,923 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Tomato Soup

Ingredients

Directions

Make the soup

  1. In a pot, combine tomatoes and water or stock.

  2. Add butter and flour, and cook together until thickened.

  3. Season with salt and pepper.

Finish and serve

  1. Stir in cream or milk just before serving.

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.

Photo for illustrative purposes only · Contact us to use it

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. Tomato + peppertop 7% of all pairs
    Smell alikemoderate
    Cooked together17,923 recipes

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

  2. Butter + creamtop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

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

    Shared aroma: isobutyraldehyde (malty, green).

  4. Flour + peppertop 19% of all pairs
    Smell alikemoderate
    Cooked together50,459 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Flour + creamtop 20% of all pairs
    Smell alikemoderate
    Cooked together30,481 recipes

    Shared aroma: acetaldehyde (pungent, ethereal).

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

Tomatoes
Provides the main body and bright acidity of the soup.
Butter
Carries flavor and richness and forms the base for thickening.
Flour
Starch thickens the liquid as it cooks, giving the soup body.
Cream or milk
Adds richness and softens the sharpness of the tomatoes.

The step that matters

Cooking the butter and flour until thickened. The flour needs enough cooking and stirring to thicken smoothly and lose its raw taste. Starch clumps when it meets hot liquid unevenly, so whisking well helps prevent lumps.

Swap the tomato

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

  1. Spinachfits better
  2. Leekfits better
  3. Potatofits better
  4. Tomatothe original

Fit is the average pairing score against butter, flour, pepper, cream. 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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