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Chow-chow

A pickled relish of tomatoes, onions, cabbage, and spices.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 11 ingredients
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Why it works: Horseradish and mustard match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,832 recipes. Both carry coumarin, which smells sweet, hay. The science ↓

Chow-chow

Ingredients

Directions

Prepare

  1. Chop and mix the green tomatoes, ripe tomatoes, onions, cabbage, and red pepper.

  2. Sprinkle salt over the mixture and let it stand for 24 hours.

  3. Drain the mixture and place it in a kettle.

Cook

  1. Add grated horseradish, brown sugar, black pepper, mustard, and celery seed.

  2. Cover with vinegar and boil until clear.

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. Horseradish + mustardtop 1% of all pairs
    Smell alikestrong
    Cooked together1,832 recipes

    Shared aroma: coumarin (sweet, hay).

  2. Mustard + celerytop 2% of all pairs
    Smell alikemoderate
    Cooked together4,169 recipes

    Shared aroma: guaiacol (smoky, sweet).

  3. Cabbage + horseradishtop 2% of all pairs
    Smell alikestrong
    Cooked together481 recipes

    Shared aroma: coumarin (sweet, hay).

  4. Cabbage + mustardtop 3% of all pairs
    Smell alikestrong
    Cooked together1,645 recipes

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

  5. Tomato + celerytop 4% of all pairs
    Smell alikemoderate
    Cooked together3,377 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

Green tomatoes
Provide tart, firm bulk that holds its shape during long simmering.
Ripe tomatoes
Add juice and body that help form the relish's moist, saucy base.
Cabbage
Adds crunchy texture and bulk that softens gradually as it cooks.
Coarse sea salt
Draws water out of the vegetables, firming them and concentrating flavour before cooking.
Brown sugar
Adds sweetness and helps balance the sharpness of the vinegar.
Vinegar
Provides acidity that preserves the relish and gives it its tangy flavour.

The step that matters

Draining after salting. The salted vegetables release a lot of liquid over 24 hours. Draining them well keeps the final mixture from being watery and lets the vinegar and sugar season it properly.

Swap the tomato

How well each one fits the dish's main ingredients (onion, cabbage, horseradish, sugar, pepper, mustard, celery):

  1. Turnipfits better
  2. Broccolifits better
  3. Lettucefits better
  4. Tomatothe original

Fit is the average pairing score against onion, cabbage, horseradish, sugar, pepper, mustard, celery. 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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Relish 49Pickle 25Pickles 16Tomato 9Cucumber 4Salad 3 See all 120 →

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