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
Layer the cabbage, onions, and cucumbers in a vessel with coarse sea salt overnight.
Cook
Drain thoroughly and add the vinegar, brown sugar, horseradish, mustard seeds, ground mustard, black pepper, celery seed, cinnamon, and turmeric.
Set the mixture over low heat and cook for 2 hours.
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.
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Horseradish + mustardtop 1% of all pairsSmell alikestrongCooked together1,832 recipes
Shared aroma: coumarin (sweet, hay).
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Cucumber + horseradishtop 2% of all pairsSmell alikestrongCooked together640 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Cabbage + horseradishtop 2% of all pairsSmell alikestrongCooked together481 recipes
Shared aroma: coumarin (sweet, hay).
-
Cucumber + mustardtop 3% of all pairsSmell alikestrongCooked together2,281 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Cabbage + mustardtop 3% of all pairsSmell alikestrongCooked together1,645 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
- Cabbage
- Forms the bulk of the relish, giving it a crisp, sturdy texture after salting.
- Vinegar
- Provides the acidity that preserves the relish and gives it its sharp flavour.
- Brown sugar
- Adds sweetness that balances the sharpness of the vinegar and mustard.
- Mustard seed
- Supplies the pungent, sharp heat that defines the relish's character.
- Horseradish
- Adds a sharp, pungent bite that complements the mustard flavours.
- Onions
- Contribute aromatic sweetness and body to the cooked mixture.
The step that matters
Salting overnight and draining thoroughly. Salt draws water out of the cabbage, onions, and cucumbers. Draining well removes that liquid so the relish cooks thick rather than watery and the vegetables keep some crispness.
Swap the onion
How well each one fits the dish's main ingredients (cabbage, cucumber, vinegar, sugar, horseradish, mustard, pepper):
- Radishfits better
- Lettucefits better
- Broccolifits better
- Onionthe original
Fit is the average pairing score against cabbage, cucumber, vinegar, sugar, horseradish, mustard, 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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