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Chili Sauce

A spicy tomato-based sauce made with onions, peppers, vinegar, salt, sugar, and cinnamon.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 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. Peel the tomatoes and onions.

  2. Slice and chop the onions and peppers finely.

Cook and store

  1. Mix all ingredients together.

  2. Boil for 1½ hours.

  3. Bottle and store in a dark, cool place.

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. Onion + tomatotop 8% of all pairs
    Smell alikemoderate
    Cooked together20,633 recipes

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

  3. Cinnamon + peppertop 9% of all pairs
    Smell alikestrong
    Cooked together4,890 recipes

    Shared aroma: methyl cinnamate (strawberry).

  4. Sugar + cinnamontop 10% of all pairs
    Smell alikelow
    Cooked together30,779 recipes

    Shared aroma: guaiacol (smoky, sweet).

  5. Cinnamon + tomatotop 11% of all pairs
    Smell alikemoderate
    Cooked together1,348 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

Sugar and cinnamon barely smell alike, yet cooks put them together in 30,779 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

Onions
Adds bulk and savory sweetness that mellows as the sauce simmers.
Vinegar
Provides acidity that gives the sauce its tang and helps preserve it.
Sugar
Adds sweetness that balances the acidity of the vinegar.
Tomatoes
Supply body, moisture and fruity flavour as the sauce reduces.

The step that matters

Boil for 1½ hours. A long, steady boil reduces the liquid and concentrates flavour, and the vinegar and sugar need that time to blend into a thick, stable sauce. Stopping early leaves it thin and less safe to store.

Swap the onion

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

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

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