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Sauce

Chili Sauce

A tomato-based sauce with peppers, onions, salt, sugar, and vinegar, simmered for an hour.

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

Prepare

  1. Chop the green peppers and onions very finely.

  2. Peel the tomatoes and cut them into small pieces.

Cook

  1. Combine all ingredients in a kettle.

  2. Boil gently for one hour.

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. Pepper + oniontop 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
Provide the bulk, moisture and acidic body that the sauce is built on.
Vinegar
Adds acidity that preserves the sauce and sharpens its flavour.
Brown sugar
Balances the acidity with sweetness and helps give the sauce a deeper flavour.
Onions
Contribute savoury depth and aroma as they soften during the long simmer.
Green peppers
Add a fresh, slightly bitter vegetable note and body to the sauce.

The step that matters

Boil gently for one hour. A gentle simmer lets the tomatoes and onions break down and the flavours meld while the liquid slowly reduces. A hard boil can scorch the sugar on the bottom of the kettle and cook off too much liquid unevenly.

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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