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Cucumbers and Onions

Pickled cucumbers and onions preserved in vinegar with mustard flour, ginger, white pepper, mace, and cloves.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Mustard and cucumber 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 ↓

Cucumbers and Onions

Ingredients

Directions

Prepare the pickling liquor

  1. Boil the vinegar with mustard flour until mixed well; let it cool.

Pack the jars

  1. Slice the cucumbers and onions.

  2. Place the sliced cucumbers and onions in jars.

  3. Add ginger, white pepper, mace, and cloves to the jars.

  4. Pour the cooled vinegar over the vegetables.

  5. Seal the jars tightly.

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. Mustard + cucumbertop 3% of all pairs
    Smell alikestrong
    Cooked together2,281 recipes

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

  2. Mustard + oniontop 6% of all pairs
    Smell alikestrong
    Cooked together9,259 recipes

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

  3. Vinegar + mustardtop 7% of all pairs
    Smell alikemoderate
    Cooked together14,067 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Cucumber + oniontop 8% of all pairs
    Smell alikestrong
    Cooked together6,050 recipes

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

  5. Vinegar + cucumbertop 8% of all pairs
    Smell alikemoderate
    Cooked together4,734 recipes

    Shared aroma: 2-methylbutyl acetate (fruit).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Vinegar
Provides the acidic liquid that preserves and sharpens the pickled vegetables.
Mustard flour
Adds pungent mustard flavour and thickens the vinegar slightly when boiled.
Cucumbers
Form the crisp, mild main body of the pickle.
Onions
Add sharpness and sweetness that mellow during pickling.

The step that matters

Let the vinegar cool before pouring it over the vegetables. Hot liquid softens cucumber and onion slices and can cook them partly, reducing crispness. Cooling first keeps the texture firm while the vinegar still penetrates and preserves them.

Swap the white pepper

How well each one fits the dish's main ingredients (vinegar, mustard, flour, cucumber, onion, ginger, mace):

  1. Turmericfits better
  2. Allspicefits better
  3. Garlicfits better
  4. White pepperthe original

Fit is the average pairing score against vinegar, mustard, flour, cucumber, onion, ginger, mace. 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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