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 the cucumbers
Pare and remove the seeds from the cucumbers, then grate them.
Drain the grated cucumbers in a colander until you have 1 pint of pulp.
Make and bottle the catsup
Transfer the pulp to a pot and add cayenne, cider vinegar, salt, and horseradish, then mix well.
Bottle and seal.
Serve
Serve with cold meats, especially nice with cold corned beef.
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 + horseradishtop 2% of all pairsSmell alikestrongCooked together640 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Cider + vinegartop 6% of all pairsSmell alikemoderateCooked together3,431 recipes
Shared aroma: 4-ethyl-2-methoxyphenol (smoky, clove).
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Cucumber + vinegartop 8% of all pairsSmell alikemoderateCooked together4,734 recipes
Shared aroma: 2-methylbutyl acetate (fruit).
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Pepper + horseradishtop 11% of all pairsSmell alikemoderateCooked together2,646 recipes
Shared aroma: coumarin (sweet, hay).
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Cucumber + peppertop 12% of all pairsSmell alikemoderateCooked together5,991 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 bulk and fresh, watery base that becomes the catsup's pulp.
- Cider vinegar
- Adds acidity that sharpens flavor and helps preserve the catsup.
- Horseradish
- Contributes pungent heat and sharp aroma that cut through the cold meats.
The step that matters
Drain the grated cucumbers until you have 1 pint of pulp. Grated cucumber holds a lot of water, and excess liquid would dilute the catsup and make it thin and less concentrated in flavor. Draining to the stated pulp volume keeps the texture thick and the seasoning balanced.
Swap the horseradish
How well each one fits the dish's main ingredients (cucumber, pepper, cider, vinegar):
- Mustardfits better
- Capsicumfits better
- Radishfits better
- Horseradishthe original
Fit is the average pairing score against cucumber, 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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