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Sauce

Caper Sauce

A buttery sauce thickened with flour, milk, and water, seasoned with salt, white pepper, and capers.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Caper Sauce

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

  1. Melt the butter in a saucepan.

  2. Stir in the flour and milk.

  3. When it reaches boiling point, gradually pour in the cold water.

  4. Let the mixture boil, then season with salt and white pepper.

  5. Boil together for 2 minutes, then add the capers and remove from heat.

Recipe from a historical cookbook (Internet Archive).

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.

  1. Flour + caperstop 6% of all pairs
    Smell alikestrong
    Cooked together1,024 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  3. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Flour + milktop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Butter + caperstop 16% of all pairs
    Smell alikemoderate
    Cooked 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
Adds richness and a rounded flavour to the sauce base.
Flour
Its starch thickens the liquid into a smooth, cohesive sauce as it heats.
Milk
Gives the sauce a creamy body and mild sweetness.
Capers
Add a sharp, briny flavour that cuts through the richness of the butter and milk.

The step that matters

Adding the cold water at boiling point. Flour starch swells and thickens when heated in liquid, but it can clump if liquid is added unevenly. Adding the cold water gradually while the mixture is hot and moving helps keep the sauce smooth.

Swap the white pepper

How well each one fits the dish's main ingredients (butter, flour, milk, capers):

  1. Cinnamonfits better
  2. Nutmegfits better
  3. Parsleyfits better
  4. White pepperthe original

Fit is the average pairing score against butter, flour, milk, capers. 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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