Why it works: Onion and mustard match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and 9,259 recipes mention both. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Herring Salad
Ingredients
Directions
Prepare
Soak three Holland herrings overnight.
Cut the herrings into very small pieces.
Cook and peel eight medium potatoes.
Make the salad
Chop the potatoes with two small cooked red beets, two onions, a few sour apples, some roasted veal, and three hard-boiled eggs.
Mix the chopped ingredients with a sauce of sweet oil, vinegar, broth, pepper, and mustard to taste.
Add a spoonful of thick sour cream to improve the sauce.
Let the salad stand overnight in an earthen dish.
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. See the original page.
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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Onion + mustardtop 6% of all pairsAroma overlapstrongMentioned together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Vinegar + mustardtop 7% of all pairsAroma overlapmoderateMentioned together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Pepper + mustardtop 9% of all pairsAroma overlapmoderateMentioned together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Cream + saucetop 9% of all pairsAroma overlapmoderateMentioned together4,787 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Onion + peppertop 11% of all pairsAroma overlapmoderateMentioned together68,474 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
- Herrings
- Provide the main fish flavour and the bulk of the salad.
- Potatoes (in the method)
- Add starchy body that soaks up the dressing and holds the salad together.
- Hard-boiled eggs
- Add richness and a firm, crumbly texture to the chopped mixture.
- Sour cream
- Adds fat and creaminess that smooths the sharp vinegar sauce.
- Vinegar
- Adds acidity that sharpens the flavour and balances the fish and fat.
The step that matters
Let the salad stand overnight in an earthen dish.. Resting lets the acidic sauce penetrate the chopped potatoes, beets, and herring so the flavours blend evenly. Serving too soon leaves the components tasting separate and sharp.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (cream, sauce, egg, vinegar, pepper, mustard):
- Horseradishbetter flavor fit
- Shallotbetter flavor fit
- Capsicumbetter flavor fit
- Onionthe original
Fit is the average pairing score against cream, sauce, egg, vinegar, pepper, mustard. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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