Why it works: Vinegar and horseradish are a kitchen classic. They rank in the top 6% of all ingredient pairs, and 2,588 recipes mention both. Both carry isobutyraldehyde, which smells malty, green. The science ↓
The recipe
Ingredients
Contains: fish (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Prepare
Rub a little salt down the bone and thick part of the fish, and tie it with wide tape to prevent breaking.
Place the fish in a fish kettle and cover with cold water, adding salt and vinegar.
Poach
Bring the water just to a boil, then reduce heat to simmer gently until the fish is done.
Check doneness by testing if the meat separates easily from the bone.
Finish and serve
Skim the water well, then drain the fish and transfer it to a neatly folded napkin in a dish.
Garnish with parsley.
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 aroma chemistry they share, and how many recipes mention both.
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Vinegar + horseradishtop 6% of all pairsAroma overlaplowMentioned together2,588 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
- Cod's head and shoulders
- The main protein, cooked whole so its flesh stays moist and flakes into tender pieces.
The step that matters
Simmer gently after bringing the water to a boil. Vigorous boiling agitates the fish and tightens its protein fibers, which can break the flesh apart and make it tough. A gentle simmer cooks it evenly while keeping the pieces intact.
“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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