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Cucumber Sauce

A pickled cucumber sauce with onions, mustard seed, black pepper, and vinegar.

From an old cookbook · modernised transcription
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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 ↓

Cucumber Sauce

Ingredients

Directions

Prepare

  1. Combine cucumbers and onions in a bowl, add salt, and let drain in a fine sieve for 8 hours.

  2. Mix in mustard seed and black pepper.

Pickle

  1. Transfer to a stone jar.

  2. Cover with hot cider vinegar.

  3. Let stand for a week.

  4. Drain for several hours.

  5. Cover with fresh boiling vinegar.

Jar and seal

  1. Pack into Mason jars.

  2. Seal while hot.

Recipe from a historical cookbook (Internet Archive).

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.

  1. Cucumber + mustardtop 3% of all pairs
    Smell alikestrong
    Cooked together2,281 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  2. Onion + mustardtop 6% of all pairs
    Smell alikestrong
    Cooked together9,259 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  3. Cider + vinegartop 6% of all pairs
    Smell alikemoderate
    Cooked together3,431 recipes

    Shared aroma: 4-ethyl-2-methoxyphenol (smoky, clove).

  4. Mustard + vinegartop 7% of all pairs
    Smell alikemoderate
    Cooked together14,067 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Cucumber + oniontop 8% of all pairs
    Smell alikestrong
    Cooked 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
Provide the crisp, bulk vegetable base that softens slightly during salting and pickling.
Fine salt
Draws water out of the cucumbers and onions, firming the texture and preserving the mixture.
White onions
Add pungent flavor that mellows during the long vinegar soak.
Hot cider vinegar
Acidity that preserves the vegetables and gives the sauce its tangy character.
Mustard seed
Contributes sharp, pungent flavor that deepens as the sauce stands.

The step that matters

Drain after salting. Salt draws out excess water from the cucumbers and onions. If they are not drained well, the extra liquid dilutes the vinegar and the sauce can turn watery and less crisp.

Swap the onion

How well each one fits the dish's main ingredients (cucumber, mustard, pepper, cider, vinegar):

  1. Horseradishfits better
  2. Radishfits better
  3. Lettucefits better
  4. Onionthe original

Fit is the average pairing score against cucumber, mustard, pepper, 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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