Why it works: Capers and tarragon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 379 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Caper Sauce
Ingredients
Directions
Melt the butter in an enamel bowl.
Slowly add the flour, stirring to combine.
Add the pepper, salt, and milk, then bring to a boil.
Stir in the chopped capers and tarragon 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.
Photo for illustrative purposes only · Contact us to use it
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 + tarragontop 1% of all pairsSmell alikestrongCooked together379 recipes
Shared aroma: coumarin (sweet, hay).
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Pepper + tarragontop 5% of all pairsSmell alikestrongCooked together2,399 recipes
Shared aroma: estragole (anise, licorice).
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Flour + caperstop 6% of all pairsSmell alikestrongCooked together1,024 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Tarragon + vinegartop 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
- Butter
- Provides fat and richness, and carries flavour through the sauce.
- Flour
- Thickens the sauce as its starch swells when heated in the butter and milk.
- Milk
- Forms the liquid base, giving the sauce its body and creamy texture.
- Capers
- Add a salty, sharp flavour that cuts through the richness of the sauce.
- Tarragon vinegar
- Adds acidity and a bright aroma that lifts the flavour of the sauce.
The step that matters
Bring to a boil after adding the flour and milk. Flour must be stirred into the melted butter so it cooks evenly without lumps. Heating the mixture to a boil lets the starch swell and thicken the sauce.
Swap the capers
How well each one fits the dish's main ingredients (butter, flour, pepper, milk, tarragon, vinegar):
- Parsleyfits better
- Marjoramfits about as well
- Thymefits about as well
- Capersthe original
Fit is the average pairing score against butter, flour, pepper, milk, tarragon, vinegar. 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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