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Caper Sauce, Substitute for

A butter-based sauce with parsley, vinegar, salt, and pepper used as a substitute for caper sauce.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓

Caper Sauce, Substitute for

Ingredients

Directions

Prepare the parsley

  1. Choose dark-colored parsley or boil it slowly to reduce its color.

  2. Cut the parsley into small pieces, but do not chop it.

Make the sauce

  1. In a bowl, combine the melted butter, parsley, vinegar, salt, and pepper.

  2. Mix well and serve as a substitute for caper sauce.

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.

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. Parsley + peppertop 2% of all pairs
    Smell alikestrong
    Cooked together34,122 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

  2. Vinegar + peppertop 14% of all pairs
    Smell alikemoderate
    Cooked together27,814 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

  3. Butter + parsleytop 15% of all pairs
    Smell alikemoderate
    Cooked together28,563 recipes

    Shared aroma: trans-2-hexenal (green, leafy).

  4. Parsley + vinegartop 16% of all pairs
    Smell alikemoderate
    Cooked together6,477 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

  5. Butter + peppertop 21% of all pairs
    Smell alikemoderate
    Cooked together85,593 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Melted butter
Provides the rich fat and smooth, coating body of the sauce.
Parsley
Adds fresh herbal flavor and green colour to stand in for capers.
Vinegar
Adds sharp acidity that gives the sauce the tang typical of caper sauce.

The step that matters

Choosing or boiling the parsley for colour. Bright green parsley looks noticeably different from the duller colour of capers. Boiling it slowly lowers that green because heat breaks down the leaf pigment, so the sauce looks closer to the intended result.

Swap the parsley

How well each one fits the dish's main ingredients (butter, vinegar, pepper):

  1. Tarragonfits about as well
  2. Parsleythe original
  3. Thymefits less well
  4. Dillfits less well

Fit is the average pairing score against butter, vinegar, pepper. 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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