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 ↓
Pickled Cucumbeks
Ingredients
Directions
Prepare the brine
Wash cucumbers carefully and place them in jars.
Make a weak brine with ¼ cup of coarse sea salt to 1.5 gallons of water.
Scald the brine.
Pour the scalded brine over the cucumbers.
Cover the cucumbers.
Repeat the brine process for three mornings, skimming thoroughly each time.
Make the vinegar and pickle
On the fourth day, heat vinegar in a porcelain kettle and add a walnut-sized piece of alum.
Add cucumbers until covered.
Do not boil; skim off the scalded vinegar as soon as the cucumbers are covered.
Replace with more cucumbers, adding a small piece of alum each time.
Discard the vinegar and replace it with good cider or white wine vinegar.
Add spices, mustard seed, and red peppers to the vinegar.
Sort the pickles into stone or glass jars.
Pour the hot spiced vinegar over the pickles.
Seal the jars.
Store them away for later use.
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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Cucumber + walnuttop 6% of all pairsSmell alikestrongCooked together380 recipes
Shared aroma: 2-nonenal (fatty, green).
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Vinegar + mustardtop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Cucumber + vinegartop 8% of all pairsSmell alikemoderateCooked together4,734 recipes
Shared aroma: 2-methylbutyl acetate (fruit).
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Walnut + mustardtop 9% of all pairsSmell alikestrongCooked together849 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Coarse sea salt
- Draws water out of the cucumbers and seasons the brine during the early curing.
- Vinegar (cider or white wine)
- Acidity that preserves the cucumbers and gives the pickles their sour flavor.
- Alum
- Helps the cucumbers stay firm and crisp during pickling.
- Mustard seed
- Adds a pungent, aromatic flavor to the spiced vinegar.
The step that matters
Do not boil the vinegar. Boiling the vinegar can soften the cucumbers and drive off its aroma. Keeping it just scalded helps the pickles stay firm and crisp.
Swap the walnut
How well each one fits the dish's main ingredients (cucumber, vinegar, mustard, pepper):
- Lentilsfits better
- Black-eyed peafits better
- Sesamefits better
- Walnutthe original
Fit is the average pairing score against cucumber, vinegar, mustard, pepper. 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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