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Sauce

Indian Sauce

A thick tomato and apple sauce seasoned with onions, mustard, ginger, and spices, sweetened with sugar and vinegar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 9 ingredients
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Why it works: Onion and mustard match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Indian Sauce

Ingredients

Directions

  1. Chop the tomatoes, apples, and onions.

  2. Mix all ingredients together in a large pot.

  3. Boil the mixture until it thickens.

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. Onion + mustardtop 6% of all pairs
    Smell alikestrong
    Cooked together9,259 recipes

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

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

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

  3. Mustard + vinegartop 7% of all pairs
    Smell alikemoderate
    Cooked together14,067 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

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

  5. Ginger + peppertop 9% of all pairs
    Smell alikestrong
    Cooked together6,800 recipes

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

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

What each ingredient does

Tomatoes
Provides most of the liquid and body that the sauce reduces into.
Sour apples
Their natural pectin helps the sauce thicken, and their tartness adds bright flavor.
Onions
Build a savory base and aroma as they cook down.
Sugar
Adds sweetness and, as the mixture reduces, helps thicken the sauce.
Vinegar
Adds acidity that balances the sweetness and helps preserve the sauce.

The step that matters

Boiling until thickened. The sauce thickens only as water evaporates and pectin and sugar concentrate. Stopping early leaves it thin, while a long boil in a sugar-rich mixture can scorch on the bottom of the pot.

Swap the apple

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

  1. Limefits better
  2. Avocadofits better
  3. Cherryfits better
  4. Applethe original

Fit is the average pairing score against tomato, onion, mustard, ginger, 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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