Why it works: Flour and capers match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 1,024 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Caper Sauce
Ingredients
Directions
Make the sauce
Skim the fat from the mutton broth until only a few small bubbles remain.
In a small bowl, mix the flour with a little cold water until smooth.
Add the flour mixture to the broth and bring to a boil.
Finish and serve
Stir in the chopped hard boiled egg and capers.
Serve warm.
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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Flour + caperstop 6% of all pairsSmell alikestrongCooked together1,024 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Egg + caperstop 21% of all pairsSmell alikemoderateCooked together1,311 recipes
Shared aroma: 2-methylbutyraldehyde (malty, chocolate).
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Mutton + eggtop 26% of all pairsSmell alikemoderateCooked together1,648 recipes
Shared aroma: 2-nonenal (fatty, green).
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Mutton + caperstop 26% of all pairsSmell alikelowCooked together199 recipes
Shared aroma: octanal (fat, soap).
Flour and egg barely smell alike, yet cooks put them together in 106,462 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mutton broth
- Forms the liquid base of the sauce and carries its savory flavor.
- Flour
- Thickens the broth into a smooth sauce when heated with liquid.
- Hard boiled egg
- Adds body and a mild, rich texture to the sauce.
- Capers
- Adds a sharp, briny acidity that cuts the richness of the broth.
The step that matters
Mix the flour with cold water until smooth. Flour added directly to hot liquid clumps, because its starch swells unevenly. Mixing it with cold water first disperses the starch so the sauce thickens smoothly.
Swap the capers
How well each one fits the dish's main ingredients (mutton, flour, egg):
- Capersthe original
- Turmericfits about as well
- Nutmegfits about as well
- Parsleyfits less well
Fit is the average pairing score against mutton, flour, egg. 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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