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
Chop the green tomatoes, ripe tomatoes, cabbage, green peppers, and red peppers.
Sprinkle with 1 cup coarse sea salt and let stand overnight.
Cook
The next day, strain the mixture and add 3 lbs. sugar and grated horseradish.
Cover with vinegar and bring to a boil.
Add black pepper, ground mustard, mustard seed, ground cloves, mace, celery seed, chopped celery, turmeric, and boiled lima beans.
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).
-
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).
-
Pepper + clovetop 5% of all pairsSmell alikestrongCooked together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
-
Cabbage + peppertop 5% of all pairsSmell alikemoderateCooked together4,081 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
- Green tomatoes
- Provide bulk and a tart, firm body to the relish.
- Cabbage
- Adds crunch and bulk that holds texture during long simmering.
- Sugar
- Adds sweetness and helps preserve the mixture alongside the vinegar.
- Vinegar
- Adds acidity that sharpens flavor and helps preserve the chow chow.
- Lima beans
- Add body and a mild, starchy texture to the mixture.
- Horseradish
- Adds sharp, pungent heat that mellows during cooking.
Swap the tomato
How well each one fits the dish's main ingredients (cabbage, pepper, sugar, horseradish, vinegar, mustard, clove):
- Radishfits better
- Beetrootfits better
- Broccolifits better
- Tomatothe original
Fit is the average pairing score against cabbage, pepper, sugar, horseradish, vinegar, mustard, clove. 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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