Why it works: Mustard and capers match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 624 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Salmon and Tartare Sauce
Ingredients
Directions
Poach the salmon
Bring a pot of water to a boil and add a generous amount of coarse sea salt.
Add the salmon to the boiling water and cook until done.
Make the tartare sauce
In a bowl, combine the egg yolks, salt, and pepper, and stir well with a wooden spoon.
Gradually add the salad oil drop by drop while stirring continuously.
Mix in the mustard, French vinegar, tarragon vinegar, and gherkins or capers until well combined.
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.
-
Mustard + caperstop 1% of all pairsSmell alikestrongCooked together624 recipes
Shared aroma: coumarin (sweet, hay).
-
Tarragon + caperstop 1% of all pairsSmell alikestrongCooked together379 recipes
Shared aroma: coumarin (sweet, hay).
-
Tarragon + mustardtop 1% of all pairsSmell alikestrongCooked together901 recipes
Shared aroma: methyleugenol (clove, spice).
-
Pepper + tarragontop 5% of all pairsSmell alikestrongCooked together2,399 recipes
Shared aroma: estragole (anise, licorice).
-
Vinegar + tarragontop 7% of all pairsSmell alikemoderateCooked together2,547 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Emulsify the oil and vinegar into a thick, stable sauce.
- Salad oil
- Provides the fat that gives the sauce its rich, creamy body.
- Made mustard
- Helps hold the emulsion together and adds sharpness.
- French vinegar
- Adds acidity that balances the richness of the oil and yolks.
- Gherkins or capers
- Add tangy, briny flavour and texture to the sauce.
The step that matters
Adding the oil drop by drop. Oil must be added slowly while whisking so it disperses into tiny droplets held by the egg yolk's lecithin. Adding it too fast breaks the emulsion, leaving a greasy, separated sauce.
Swap the mustard
How well each one fits the dish's main ingredients (salmon, egg, pepper, vinegar, tarragon, capers):
- Shallotfits about as well
- Mustardthe original
- Chivefits about as well
- Cucumberfits less well
Fit is the average pairing score against salmon, egg, pepper, vinegar, tarragon, capers. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Salmon Salad155 recipes
Salmon Croquettes129 recipes
Canned Salmon14 recipes
Smoked Salmon14 recipes