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 ↓
Old Virginia Chow Chow
Ingredients
Directions
Prepare
Chop the tomatoes, cabbage, peppers, and celery very fine.
Cover the mixture with coarse sea salt and let it stand for 24 hours.
Drain the brine thoroughly.
Cook
Cover the mixture with vinegar and add the sugar.
Scald the mixture in a porcelain kettle for 1 hour.
Remove from heat and stir in horseradish, mustard seed, cloves, spice, ginger, and ground mustard.
Store
Tie it up tightly and let it stand for a month before using.
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).
-
Celery + mustardtop 2% of all pairsSmell alikemoderateCooked together4,169 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Cabbage + horseradishtop 2% of all pairsSmell alikestrongCooked together481 recipes
Shared aroma: coumarin (sweet, hay).
-
Cabbage + mustardtop 3% of all pairsSmell alikestrongCooked together1,645 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Tomato + celerytop 4% of all pairsSmell alikemoderateCooked 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
- Ripe tomatoes
- Provide the bulk and juicy moisture that forms the body of the relish.
- Green tomatoes
- Add firm texture and tartness that holds up through long simmering.
- Cabbage
- Adds crunch and bulk, giving the relish its chunky texture.
- Sugar
- Adds sweetness that balances the vinegar and preserves the mixture.
- Vinegar
- Provides acidity that preserves the chow chow and sharpens its flavor.
- Horseradish
- Contributes sharp, pungent heat that mellows during the month of standing.
The step that matters
Drain the brine thoroughly. Salting draws out a large amount of water from the vegetables. If excess brine stays in the mixture, the relish can be overly salty and may spoil sooner, so draining well matters.
Swap the tomato
How well each one fits the dish's main ingredients (cabbage, pepper, celery, vinegar, sugar, horseradish, mustard):
- Broccolifits better
- Radishfits better
- Lettucefits better
- Tomatothe original
Fit is the average pairing score against cabbage, pepper, celery, vinegar, sugar, horseradish, mustard. 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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