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 for Boiled Mutton
Ingredients
Directions
Make the sauce
Melt the butter in a saucepan.
Stir in the flour until thoroughly mixed.
Add the mutton cooking liquid and milk, and cook until sufficiently thickened.
Finish
Just before serving, stir in the capers.
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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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).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + caperstop 16% of all pairsSmell alikemoderateCooked together1,637 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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
- Butter
- Carries fat for a rich mouthfeel and helps the flour mix smoothly into a roux.
- All-purpose flour
- Starch thickens the sauce once heated in liquid, giving it body.
- Mutton cooking liquid
- Forms the savoury base of the sauce and adds meaty flavour.
- Milk
- Adds creaminess and softens the sauce's texture.
- Capers
- Add a briny, sharp acidity that cuts through the richness of the sauce.
The step that matters
Cook until sufficiently thickened. Flour starch only swells and thickens fully when heated in liquid. Stopping early leaves the sauce thin and can leave a raw, floury taste.
Swap the capers
How well each one fits the dish's main ingredients (butter, flour, mutton, milk):
- Cinnamonfits better
- Nutmegfits better
- Capersthe original
- Turmericfits about as well
Fit is the average pairing score against butter, flour, mutton, milk. 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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