Why it works: Vinegar and mustard are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 14,067 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
To Boil Herrings
Ingredients
Directions
Prepare
Scale and clean the herrings thoroughly.
Rub the herrings with vinegar and coarse sea salt.
Skewer the tails into their mouths.
Cook and serve
Boil the herrings for 10 to 12 minutes.
Serve with parsley and melted butter, or mustard mixed with melted butter.
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 + mustardtop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Parsley + mustardtop 8% of all pairsSmell alikestrongCooked together2,588 recipes
Shared aroma: trans-2-hexenal (green, leafy).
-
Parsley + buttertop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
-
Vinegar + parsleytop 16% of all pairsSmell alikemoderateCooked together6,477 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Butter + mustardtop 22% of all pairsSmell alikemoderateCooked together8,003 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Herrings
- The main fish, whose firm flesh holds its shape through boiling.
- Vinegar
- Acidity that brightens the fish and firms its flesh slightly before cooking.
- Butter
- Adds richness and fat to the serving sauce, balancing the lean fish.
- Mustard
- Adds sharp, pungent flavour that contrasts with the rich butter.
The step that matters
Boil the herrings for 10 to 12 minutes. Boiling too long toughens and dries the delicate flesh, while too short leaves the fish undercooked near the bone. Keeping the water at a gentle simmer helps the fish cook evenly and stay intact.
Swap the parsley
How well each one fits the dish's main ingredients (vinegar, butter, mustard):
- Tarragonfits better
- Capersfits better
- Dillfits better
- Parsleythe original
Fit is the average pairing score against vinegar, butter, mustard. 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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