Why it works: Cucumber and mustard match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 2,281 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Oil Pickles
Ingredients
Directions
Prepare the vegetables
Slice cucumbers thinly without peeling them.
Slice onions and combine with cucumbers in a large bowl.
Soak the mixture in salt water overnight.
Drain the cucumbers and onions in separate colanders.
Make the dressing
In a bowl, mix salad oil, ground mustard, and black pepper.
Add enough cider vinegar to the mixture to cover the pickles.
Combine and store
Pour the mixture over the cucumbers and onions.
Cover tightly to exclude air and store in a cool place.
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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Cucumber + mustardtop 3% of all pairsSmell alikestrongCooked together2,281 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + mustardtop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Cider + vinegartop 6% of all pairsSmell alikemoderateCooked together3,431 recipes
Shared aroma: 4-ethyl-2-methoxyphenol (smoky, clove).
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Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Cucumber + oniontop 8% of all pairsSmell alikestrongCooked together6,050 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
- Form the crisp, bulky body of the pickles that the dressing soaks into.
- Onions
- Add savory sharpness and aroma that mellow during the long soak.
- Salad oil
- Carries the mustard and pepper flavors and coats the vegetables, adding richness.
- Ground mustard
- Contributes pungent heat and sharpness that blends into the oil and vinegar.
- Cider vinegar
- Provides acidity that preserves the vegetables and gives the pickles their tang.
The step that matters
Soaking the vegetables overnight in salt water. Salt draws water out of the cucumbers and onions through osmosis, firming their texture and reducing excess moisture so they stay crisp rather than soggy in the oil and vinegar.
Swap the onion
How well each one fits the dish's main ingredients (cucumber, pepper, mustard, cider, vinegar):
- Horseradishfits better
- Radishfits better
- Lettucefits better
- Onionthe original
Fit is the average pairing score against cucumber, pepper, mustard, cider, vinegar. 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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