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Green Sandwiches

A sandwich made of white loaf, buttered and topped with chopped parsley, optionally seasoned with onion juice.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Parsley and onion are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 25,843 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓

Green Sandwiches

Ingredients

Directions

Prepare

  1. Finely cut the white loaf into slices.

  2. Butter each slice generously.

  3. Sprinkle chopped parsley over the buttered slices.

  4. If desired, toss the parsley in a little onion juice before sprinkling.

Assemble and serve

  1. Stack the sandwiches cross-wise on plates.

  2. Decorate the center of the pile with a sprig of parsley.

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 + oniontop 9% of all pairs
    Smell alikemoderate
    Cooked together25,843 recipes

    Shared aroma: 2,4-decadienal (seaweed).

  2. Butter + oniontop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

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

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

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

What each ingredient does

White loaf
Forms the bread slices that hold the filling together.
Butter
Adds fat and richness and keeps the bread from soaking up the parsley's moisture.
Chopped parsley
Adds fresh, herbal aroma and a bit of color to the filling.

Swap the onion

The recipe marks onion as optional. How well each one fits the dish's main ingredients (butter, parsley):

  1. Shallotfits better
  2. Carrotfits better
  3. Potatofits better
  4. Onionthe original

Fit is the average pairing score against butter, parsley. 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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