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Cucumber Catsup

A cucumber-based condiment made with grated cucumber, vinegar, salt, cayenne pepper, and horseradish.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Cucumber and horseradish match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 640 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Cucumber Catsup

Ingredients

Directions

Prepare

  1. Pare, split, remove the seeds, and grate the cucumbers.

  2. Drain the pulp before adding the other ingredients.

Combine and bottle

  1. Combine the cucumber pulp with vinegar, salt, cayenne, and horseradish.

  2. Bottle, cork tightly, and seal.

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 + horseradishtop 2% of all pairs
    Smell alikestrong
    Cooked together640 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. Pepper + horseradishtop 11% of all pairs
    Smell alikemoderate
    Cooked together2,646 recipes

    Shared aroma: coumarin (sweet, hay).

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

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

  5. Vinegar + horseradishtop 12% of all pairs
    Smell alikemoderate
    Cooked together2,609 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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 fresh, mild flavor of the ketchup after the pulp is drained.
Vinegar
Adds acidity that sharpens the flavor and helps preserve the ketchup.
Horseradish
Adds a sharp, pungent bite that gives the ketchup its character.

The step that matters

Drain the pulp before adding the other ingredients. Grated cucumber releases a lot of liquid. If the pulp is not drained, the ketchup will be watery and diluted, and the vinegar, salt, and cayenne will not balance the flavor properly.

Swap the horseradish

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

  1. Capsicumfits better
  2. Radishfits better
  3. Mustardfits better
  4. Horseradishthe 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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