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Sauce

Chili Sauce

A vinegar-based sauce with onions, green peppers, tomatoes, sugar, and salt, boiled for hours.

From an old cookbook · modernised transcription
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Why it works: Pepper and tomato 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

Prepare

  1. Chop the onions, green peppers, and tomatoes finely.

  2. In a large pot, combine the chopped vegetables with sugar, salt, and vinegar.

  3. Mix everything together and bring to a boil.

Cook and store

  1. Boil for 2 ¼ hours.

  2. Pour the sauce into glass jars for storage.

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 + tomatotop 7% of all pairs
    Smell alikemoderate
    Cooked together17,923 recipes

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

  2. Onion + tomatotop 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

Ripe tomatoes
Provide the main body and liquid that cooks down into the sauce.
Vinegar
Adds acidity that gives the sauce its sharp, tangy flavour and helps preserve it.
Sugar
Adds sweetness that balances the acidity of the vinegar and tomatoes.
Onions
Add savoury depth and body as they soften during the long boil.

The step that matters

Boil for 2 ¼ hours. A long, steady boil lets water evaporate so the sauce thickens and the flavours concentrate. Too low a heat can leave it thin, while too hard a boil can scorch the bottom of the pot.

Swap the onion

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

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

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