Why it works: Capers and mustard 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 ↓
Canape Sauce
Ingredients
Directions
Rub the yolks of the hard-boiled eggs until fine.
Add the butter and stir until creamy.
Mash the anchovy fillets and add to the mixture.
Stir in the capers, tarragon vinegar or lemon juice, and mustard.
Blanch the parsley in boiling water, chop finely, and add ½ teaspoon to the sauce.
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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Capers + mustardtop 1% of all pairsSmell alikestrongCooked together624 recipes
Shared aroma: coumarin (sweet, hay).
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Capers + tarragontop 1% of all pairsSmell alikestrongCooked together379 recipes
Shared aroma: coumarin (sweet, hay).
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Tarragon + parsleytop 1% of all pairsSmell alikestrongCooked together1,563 recipes
Shared aroma: estragole (anise, licorice).
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Tarragon + mustardtop 1% of all pairsSmell alikestrongCooked together901 recipes
Shared aroma: methyleugenol (clove, spice).
-
Capers + parsleytop 1% of all pairsSmell alikestrongCooked together1,550 recipes
Shared aroma: coumarin (sweet, hay).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Their fat and emulsifying lecithin give the sauce a smooth, creamy body.
- Butter
- Adds richness and a silky texture that softens the sauce.
- Anchovy fillets
- Supply deep savory flavor that gives the sauce its character.
- Capers
- Add a sharp, briny bite that cuts through the richness.
- Tarragon vinegar or lemon juice
- Provides acidity that brightens the sauce and balances the fat.
The step that matters
Rub the yolks until fine. Yolks must be broken down completely before the butter is added. Lumps left in the yolk will not smooth out later, so the sauce ends up grainy rather than creamy.
Swap the mustard
How well each one fits the dish's main ingredients (egg, butter, anchovy, capers, tarragon, parsley):
- Shallotfits better
- Chivefits better
- Lettucefits about as well
- Mustardthe original
Fit is the average pairing score against egg, butter, anchovy, capers, tarragon, parsley. 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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