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 ↓
Cucumber Pickles
Ingredients
Directions
Brine and firm
Scald the brine and pour it hot over the pickles for nine mornings.
On the tenth morning, throw the pickles into cold water with dissolved alum and let them stand for several hours.
Make the pickling syrup
Boil vinegar, mixed spices, brown sugar, and coarse sea salt together.
Pour the hot mixture over the pickles.
Pack and finish
Pack a few small onions and pieces of horseradish in each jar and sprinkle with fine mustard seed.
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).
-
Cucumber + mustardtop 3% of all pairsSmell alikestrongCooked together2,281 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Cucumber + walnuttop 6% of all pairsSmell alikestrongCooked together380 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Onion + mustardtop 6% of all pairsSmell alikestrongCooked together9,259 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
- Cucumbers
- The main vegetable, which softens in the brine and takes on its flavor.
- Vinegar
- Provides the sharp acidity that preserves the pickles and gives them their tang.
- Brown sugar
- Adds sweetness that balances the sharpness of the vinegar.
- Coarse sea salt
- Draws water out of the cucumbers and seasons the brine.
- Alum
- Helps the cucumbers stay firm during long brining.
- Mixed spices
- Adds aroma and warm flavor to the brine.
The step that matters
Repeated hot brining over nine mornings. Pouring the brine hot each morning must be done consistently. Heat and salt slowly draw water out of the cucumbers and let flavor penetrate, so skipping days or letting the brine cool can leave the pickles soft or under-flavored.
Swap the walnut
How well each one fits the dish's main ingredients (cucumber, vinegar, sugar, onion, horseradish, mustard):
- Sesamefits better
- Lentilsfits better
- Beansfits better
- Walnutthe original
Fit is the average pairing score against cucumber, vinegar, sugar, onion, 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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