Why it works: Potato and mustard are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 1,340 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Salmon for a Luncheon
Ingredients
Directions
Prepare
Drain the liquid from the can of salmon.
Place the salmon on a dish, breaking it into small pieces.
Make the dressing
In a bowl, combine the egg yolks, potatoes, butter, mustard, and salt, and mix until smooth.
Add vinegar gradually until the mixture reaches a cream-like consistency.
Assemble and serve
Spoon the dressing over the salmon in dollops.
Arrange the egg whites around the dish.
Garnish with nasturtium leaves and blossoms.
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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Potato + mustardtop 7% of all pairsSmell alikemoderateCooked together1,340 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Salmon + creamtop 14% of all pairsSmell alikelowCooked together1,401 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Salmon
- Provides the main protein and flaky body of the salad.
- Mealy potatoes
- Their starch breaks down when mashed, giving the dressing a smooth, thick body.
- Egg yolks
- Their fat and emulsifying lecithin help bind the butter and mustard into a smooth dressing.
- Butter
- Adds richness and fat that softens the dressing's texture and flavour.
- Mustard
- Adds sharp flavour and helps stabilise the emulsified dressing.
- Vinegar
- Adds acidity that brightens the dressing and thins it to a cream-like consistency.
The step that matters
Adding the vinegar gradually. Vinegar must be added slowly so the emulsion of yolk, butter and mustard can absorb it. Adding it all at once can thin the dressing too much or cause it to split, so the cream consistency is lost.
Swap the mustard
How well each one fits the dish's main ingredients (salmon, egg, potato, butter, vinegar, cream):
- Chivefits better
- Asparagusfits better
- Onionfits about as well
- Mustardthe original
Fit is the average pairing score against salmon, egg, potato, butter, vinegar, cream. 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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