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Tomato Sauce

A basic tomato sauce made with tomatoes, butter, flour, sugar, and salt.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 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 ↓

Tomato Sauce

Ingredients

Directions

Prepare the tomatoes

  1. If the tomatoes are hard, boil them for 5 minutes.

  2. Slice the tomatoes and rub them through a sieve.

Make the sauce

  1. In a small saucepan, melt the butter.

  2. Stir in the flour and sugar until combined.

  3. Pour in the tomato juice and stir until it boils.

  4. Season with salt to taste.

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

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  3. Butter + sugartop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

  4. Tomato + buttertop 22% of all pairs
    Smell alikemoderate
    Cooked together6,918 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  5. Tomato + flourtop 22% of all pairs
    Smell alikemoderate
    Cooked together7,065 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

Ripe tomatoes
Provide the main body, juice and flavor of the sauce.
Butter
Adds richness and fat, giving the sauce a smooth mouthfeel.
Flour
Thickens the sauce as its starch swells when heated with the liquid.
Sugar
Balances the acidity of the tomatoes with a touch of sweetness.

The step that matters

Stir in the flour and sugar until combined, then keep stirring as the tomato juice goes in. Flour clumps if it is not fully blended into the fat before liquid is added. Constant stirring while the sauce comes to a boil lets the starch swell evenly, giving a smooth, thickened sauce instead of lumps.

Swap the tomato

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

  1. Arrowrootfits better
  2. Shallotfits better
  3. Sweet potatofits better
  4. Tomatothe original

Fit is the average pairing score against butter, flour, 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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