Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Boiled Halibut
Ingredients
Directions
Poach the fish
Score the back of the halibut deeply and place it on a strainer in a kettle, back side down.
Cover with cold water and add a handful of coarse sea salt.
Heat slowly to avoid boiling too fast.
Once the fish becomes firm, carefully remove the skin.
Adjust the kettle height or reduce the heat to let it simmer for 25 to 30 minutes.
Serve
Strain the fish and serve garnished with grated horseradish and curled parsley, alongside a boat of egg sauce.
Use leftovers
For leftovers, mince the cold halibut and season with salt, cayenne, sweet oil, chopped hard-boiled eggs, and a generous amount of vinegar.
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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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Horseradish + parsleytop 6% of all pairsSmell alikestrongCooked together562 recipes
Shared aroma: coumarin (sweet, hay).
-
Horseradish + peppertop 11% of all pairsSmell alikemoderateCooked together2,646 recipes
Shared aroma: coumarin (sweet, hay).
-
Horseradish + vinegartop 12% of all pairsSmell alikemoderateCooked together2,609 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Horseradish + saucetop 12% of all pairsSmell alikemoderateCooked together775 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Halibut
- Is the main protein, which turns firm and flaky as it cooks gently in water.
- Hard-boiled eggs
- Add body and richness to the leftover mince and the egg sauce.
- Vinegar
- Adds acidity that brightens the flavour of the leftover fish.
- Sweet oil
- Adds fat and moisture to the leftover minced fish.
The step that matters
Heat slowly and keep the water below a boil. Fish proteins set gently at lower temperatures. Rapid boiling toughens and breaks up the flesh, so a slow heat and a gentle simmer keep the halibut moist and intact.
Swap the horseradish
How well each one fits the dish's main ingredients (parsley, egg, sauce, pepper, vinegar):
- Capsicumfits better
- Shallotfits better
- Mustardfits about as well
- Horseradishthe original
Fit is the average pairing score against parsley, egg, sauce, pepper, 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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