Why it works: Butter and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓
Salmon in Shells
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the salmon
Drain liquid from salmon and sift it finely.
Place salmon in buttered baking shells.
Make the sauce
Melt 2 tablespoons butter in a saucepan, then stir in 2 tablespoons flour.
Measure the drained liquid, add boiling water to bring total to 1 pint, and pour into butter‑flour mixture.
Cook until smooth, then remove from heat.
Stir in beaten egg yolks, mustard, vinegar, olive oil, and salt.
Bake and serve
Pour mixture over salmon in shells.
Sprinkle breadcrumbs on top, add a little butter, and bake at 400°F (200°C) until light brown.
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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Butter + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Mustard + olivetop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Olive + breadtop 9% of all pairsSmell alikemoderateCooked together1,091 recipes
Shared aroma: 2-undecenal (sweet).
-
Vinegar + olivetop 10% of all pairsSmell alikemoderateCooked together12,297 recipes
Shared aroma: isoamyl acetate (banana, fruity).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Salmon
- Forms the main body of the dish and supplies its flavour.
- Butter
- Enriches the flour base and adds richness and browning on top.
- Flour
- Thickens the liquid into a smooth sauce when cooked with butter.
- Egg yolks
- Thicken and enrich the sauce as they set gently with heat.
- Bread crumbs
- Form a crisp, golden topping during baking.
The step that matters
Cook the sauce until smooth before removing from heat. Flour must be cooked in the hot butter and liquid until smooth and thickened, or it tastes raw and leaves lumps. Egg yolks are added only after this, off the heat, so they thicken gently without scrambling.
Swap the mustard
How well each one fits the dish's main ingredients (salmon, butter, flour, egg, vinegar, olive, bread):
- Chivefits better
- Cucumberfits better
- Shallotfits better
- Mustardthe original
Fit is the average pairing score against salmon, butter, flour, egg, vinegar, olive, bread. 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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