Why it works: Shallot and capers match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 405 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Sauce Tartare
Ingredients
Directions
Prepare
Finely chop the shallot, parsley, tarragon, and capers.
In a bowl, combine the chopped ingredients with ground mustard, egg yolks, vinegar, salt, and pepper.
Make the sauce
Slowly pour in the olive oil while stirring continuously.
If the sauce is too thick, add a little more vinegar.
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.
-
Shallot + caperstop 1% of all pairsSmell alikestrongCooked together405 recipes
Shared aroma: coumarin (sweet, hay).
-
Capers + mustardtop 1% of all pairsSmell alikestrongCooked together624 recipes
Shared aroma: coumarin (sweet, hay).
-
Shallot + tarragontop 1% of all pairsSmell alikestrongCooked together602 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Tarragon + caperstop 1% of all pairsSmell alikestrongCooked together379 recipes
Shared aroma: coumarin (sweet, hay).
-
Shallot + mustardtop 1% of all pairsSmell alikestrongCooked together859 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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 into the sauce, giving it a thick, creamy body.
- Olive oil
- Provides the fat that makes up most of the sauce's rich texture.
- Capers
- Add briny acidity and a sharp, salty bite that cuts through the richness.
- Vinegar
- Adds acidity that brightens the sauce and balances the rich oil and yolks.
- Ground mustard
- Helps stabilise the emulsion and adds a sharp, pungent flavour.
The step that matters
Slowly pour in the olive oil while stirring continuously. Oil must be added gradually while stirring so tiny droplets disperse and are held by the egg yolk's lecithin. Adding it too fast causes the emulsion to break, leaving a greasy, separated sauce.
Flavor stand-ins for the parsley
How well each one fits the dish's main ingredients (shallot, tarragon, capers, mustard, egg, vinegar, pepper):
- Parsleythe original
- Dillabout as good a flavor fit
Fit is the average pairing score against shallot, tarragon, capers, mustard, egg, vinegar, pepper. 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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