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Sauce

To Make Mock Caper Sauce

A sauce made from boiled parsley, butter, and vinegar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 3 ingredients
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Why it works: Parsley and butter are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 28,563 recipes. Both carry trans-2-hexenal, which smells green, leafy. The science ↓

To Make Mock Caper Sauce

Ingredients

Directions

  1. Boil the parsley and chop it not very fine.

  2. Combine the chopped parsley with melted butter and vinegar in a saucepan.

  3. Heat the mixture until it comes to a boil.

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 + buttertop 15% of all pairs
    Smell alikemoderate
    Cooked together28,563 recipes

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

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

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

  3. Butter + vinegartop 23% of all pairs
    Smell alikemoderate
    Cooked together13,513 recipes

    Shared aroma: isoamyl acetate (banana, pear).

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

What each ingredient does

Parsley
Provides the bulk and herbal flavour that gives the sauce its caper-like character.
Butter
Adds fat and richness, carrying flavour and giving the sauce a smooth mouthfeel.
Vinegar
Adds acidity that sharpens the flavour and gives the sauce its tangy, caper-like bite.

The step that matters

Heating until it boils. Once the butter and vinegar are combined with the parsley, letting the mixture boil briefly lets the flavours meld and the sauce heat through, but overheating can cause the butter to separate and the sauce to turn greasy.

Swap the parsley

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

  1. Tarragonfits better
  2. Garlicfits about as well
  3. Parsleythe original
  4. Capersfits about as well

Fit is the average pairing score against butter, 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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