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Salad

Cucumber and Onion Salad

A salad of sliced cucumbers and onion dressed with vinegar, pepper, and coarse sea salt.

From an old cookbook · modernised transcription
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Why it works: Cucumber and onion match in chemistry and in kitchens. They rank in the top 8% of all ingredient pairs, and cooks put them together in 6,050 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Cucumber and Onion Salad

Ingredients

Directions

Prepare

  1. Peel the cucumbers and soak them in ice water for 1 hour.

  2. Soak the onion in ice water for 1 hour as well.

  3. Slice the cucumbers and onion in a ratio of 3 cucumbers to 1 onion.

Assemble and season

  1. Arrange the sliced vegetables in a salad bowl.

  2. Season with vinegar, pepper, and coarse sea salt.

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

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

  2. Cucumber + vinegartop 8% of all pairs
    Smell alikemoderate
    Cooked together4,734 recipes

    Shared aroma: 2-methylbutyl acetate (fruit).

  3. Onion + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

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

  4. Cucumber + peppertop 12% of all pairs
    Smell alikemoderate
    Cooked together5,991 recipes

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

  5. Onion + vinegartop 14% of all pairs
    Smell alikemoderate
    Cooked together18,226 recipes

    Shared aroma: acetic acid (sour, vinegar).

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

What each ingredient does

Cucumbers
Provide the bulk and crisp, watery texture of the salad.
Onion
Adds sharp, pungent flavor that mellows with soaking.
Vinegar
Adds acidity that brightens the cucumber and onion flavors.

The step that matters

Soaking the onion in ice water. Soaking in cold water draws out some of the sharp sulfur compounds in raw onion, giving a milder, crisper result. Soaking too briefly leaves the onion harsh.

Swap the onion

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

  1. Capsicumfits better
  2. Radishfits better
  3. Mustardfits better
  4. Onionthe original

Fit is the average pairing score against cucumber, vinegar, 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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