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Sauce

Chili Sauce

A tomato-based sauce with onions, green peppers, sugar, salt, and vinegar, simmered slowly for several hours.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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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 ↓

Chili Sauce

Ingredients

Directions

  1. Combine the chopped tomatoes, onions, and green peppers in a large pot.

  2. Add the sugar, salt, and vinegar.

  3. Cook the mixture slowly for 3 to 4 hours, stirring occasionally.

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

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

  2. Tomato + oniontop 8% of all pairs
    Smell alikemoderate
    Cooked together20,633 recipes

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

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

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

  4. Onion + vinegartop 14% of all pairs
    Smell alikemoderate
    Cooked together18,226 recipes

    Shared aroma: acetic acid (sour, vinegar).

  5. Pepper + vinegartop 14% of all pairs
    Smell alikemoderate
    Cooked together27,814 recipes

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

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

What each ingredient does

Tomatoes
Form the bulk of the sauce and provide most of its liquid and body as they cook down.
Onions
Add savory depth and natural sweetness that builds as they cook slowly.
Green peppers
Contribute a fresh, grassy flavor and some texture to the sauce.
Sugar
Adds sweetness that balances the sharpness of the vinegar and tomatoes.
Vinegar
Provides acidity that brightens the flavor and sharpens the tomato base.

The step that matters

Cook slowly and stir occasionally. Long, gentle cooking lets the tomatoes break down and thicken, but the sugar and solids can scorch on the bottom of the pot. Stirring regularly spreads heat evenly and keeps the sauce from burning.

Swap the onion

How well each one fits the dish's main ingredients (tomato, pepper, sugar, vinegar):

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

Fit is the average pairing score against tomato, pepper, sugar, vinegar. 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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