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 ↓
Pickled Cucumbers
Ingredients
Directions
Brine
Make a brine with 1 pint coarse sea salt and 6 quarts boiling water; boil and skim clear.
Wash 150 small cucumbers and soak them in the brine for 48 hours, covered.
Drain the cucumbers and soak them in cold water for 2 hours, then drain again.
Pickle
Place the cucumbers in a crock with the onion, horseradish, red peppers, and alum.
Boil the mixed spices in enough vinegar to cover the cucumbers for 10 minutes.
Put the spice bag in the crock with the vinegar.
Pour off the vinegar on the third day, reheat it, and return it to the cucumbers.
Do not use for three weeks.
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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Clove + allspicetop 1% of all pairsSmell alikestrongCooked together7,874 recipes
Shared aroma: estragole (anise, licorice).
-
Celery + mustardtop 2% of all pairsSmell alikemoderateCooked together4,169 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Cucumber + horseradishtop 2% of all pairsSmell alikestrongCooked together640 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Mustard + allspicetop 2% of all pairsSmell alikestrongCooked together1,928 recipes
Shared aroma: methyleugenol (clove, spice).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Cucumbers
- Form the pickles themselves, becoming crisp and firm as they cure in brine and vinegar.
- Coarse sea salt
- Draws water out of the cucumbers and seasons them during the brine soak.
- Vinegar
- Provides the sour acidity that preserves the cucumbers and gives the pickles their tang.
- Alum
- Helps the cucumbers stay firm and crisp during long pickling.
- Horseradish root
- Adds a sharp, pungent flavour that infuses the cucumbers as they pickle.
The step that matters
Pour off the vinegar on the third day, reheat it, and return it to the cucumbers. Reheating the vinegar and pouring it back over the cucumbers keeps the pickling liquid hot enough to help flavours penetrate and reduce spoilage risk during the long cure.
Swap the onion
How well each one fits the dish's main ingredients (cucumber, clove, horseradish, pepper, celery, mustard, allspice):
- Lettucefits better
- Turnipfits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against cucumber, clove, horseradish, pepper, celery, mustard, 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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