Why it works: Onion and vinegar are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 18,226 recipes. Both carry acetic acid, which smells sour, vinegar. The science ↓
Pickled Salmon
Ingredients
Directions
Prepare the salmon
Soak the salmon in fresh water for 12 hours.
Cut the salmon into slices ¼ inch thick.
Pickle
In a 9-quart jar, layer pickling spice, fish, onion slices, sugar, and repeat until all ingredients are used.
Pour vinegar over the layers to cover them completely.
Let the mixture stand for 3 days or more.
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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Onion + vinegartop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Sugar + vinegartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Salmon + oniontop 19% of all pairsSmell alikelowCooked together3,529 recipes
Shared aroma: decanal (soap, orange peel).
-
Salmon + vinegartop 27% of all pairsSmell alikelowCooked together1,675 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Salmon + sugartop 35% of all pairsSmell alikelowCooked together931 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
- Salmon
- Provides the main fish body, which firms and becomes flavorful as it cures in the brine.
- Vinegar
- Acidity that preserves the fish and gives the pickled sharp, tangy flavor.
- Onions
- Add sweet aroma and crisp texture that softens slightly as they pickle.
- White sugar
- Balances the sharpness of the vinegar with a touch of sweetness.
The step that matters
Cover the layers completely with vinegar. Fish left exposed above the liquid can spoil, because acid and submersion are what keep the pickling safe and even. Full coverage also lets the vinegar penetrate the whole stack.
Swap the onion
How well each one fits the dish's main ingredients (salmon, sugar, vinegar):
- Cucumberfits better
- Mustardfits better
- Horseradishfits better
- Onionthe original
Fit is the average pairing score against salmon, sugar, 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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