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Tomato Mustard

A preserved tomato and mustard condiment made by boiling tomatoes with spices and straining.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 14 ingredients
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Why it works: Clove and allspice match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 7,874 recipes. Both carry estragole, which smells anise, licorice. The science ↓

Tomato Mustard

Ingredients

Directions

Prepare

  1. Chop the tomatoes, onions, red pepper, and garlic.

Cook

  1. Combine all ingredients in a large pot.

  2. Boil for 1 hour, stirring occasionally.

Strain and store

  1. Strain the mixture through a coarse sieve.

  2. Store in sterilized jars.

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. Clove + allspicetop 1% of all pairs
    Smell alikestrong
    Cooked together7,874 recipes

    Shared aroma: estragole (anise, licorice).

  2. Clove + gingertop 1% of all pairs
    Smell alikestrong
    Cooked together6,038 recipes

    Shared aroma: estragole (anise, licorice).

  3. Onion + garlictop 1% of all pairs
    Smell alikestrong
    Cooked together29,058 recipes

    Shared aroma: furaneol (caramel, strawberry).

  4. Ginger + allspicetop 1% of all pairs
    Smell alikestrong
    Cooked together2,620 recipes

    Shared aroma: estragole (anise, licorice).

  5. Tomato + garlictop 3% of all pairs
    Smell alikemoderate
    Cooked together14,076 recipes

    Shared aroma: furaneol (caramel, strawberry).

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

What each ingredient does

Tomatoes
Provide the bulk and liquid that cook down into the body of the relish.
Vinegar
Adds acidity that sharpens flavour and helps preserve the mixture.
Mustard
Contributes sharp, pungent flavour that mellows during long boiling.
Brown sugar
Adds sweetness that balances the acidity and sharpness of the vinegar and mustard.
Onions
Add savoury depth and aroma as they soften during boiling.

The step that matters

Boil for 1 hour, stirring occasionally. Long boiling reduces the liquid and softens the vegetables. Stirring prevents the sugar and solids from scorching on the bottom of the pot, which would give a burnt flavour.

Swap the tomato

How well each one fits the dish's main ingredients (onion, pepper, clove, garlic, vinegar, ginger, allspice):

  1. Mustardfits better
  2. Shallotfits better
  3. Carrotfits better
  4. Tomatothe original

Fit is the average pairing score against onion, pepper, clove, garlic, vinegar, ginger, allspice. 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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