Why it works: Vinegar and horseradish are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 2,609 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
How to Boil Fish
Ingredients
Directions
Prepare
Bind the head of the fish with broad tape to prevent the cheeks from breaking.
Boil
Place the fish in a kettle of cold water with salt, sweet herbs, vinegar, and horseradish.
Bring the water to a boil and maintain a gentle boil for about 30 minutes.
Check if the fish is done by inserting a fish slice at the back bone; the flesh should lift off easily.
If cooking spawn or liver, place them beside the fish in the kettle.
Serve
Garnish the boiled fish with scraped horseradish and serve the liver and roe on the side.
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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Vinegar + horseradishtop 12% of all pairsSmell alikemoderateCooked together2,609 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Fish + horseradishtop 16% of all pairsSmell alikelowCooked together178 recipes
Shared aroma: octanal (fat, soap).
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Fish + vinegartop 26% of all pairsSmell alikelowCooked together1,036 recipes
Shared aroma: acetoin (butter, cream).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Fish
- Provides the flesh that is cooked gently until it lifts easily from the bone.
- Coarse sea salt
- Seasons the poaching water so the fish is flavoured as it cooks.
- Vinegar
- Adds acidity to the poaching water, giving the fish a sharper, brighter taste.
The step that matters
Maintain a gentle boil. A vigorous boil agitates the fish and can break the delicate flesh and cheeks. A gentle simmer cooks the protein evenly and keeps the fish intact.
Swap the horseradish
How well each one fits the dish's main ingredients (fish, vinegar):
- Cucumberfits better
- Mustardfits about as well
- Horseradishthe original
- Capsicumfits about as well
Fit is the average pairing score against fish, 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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