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Watercress Sandwiches

A sandwich of watercress, chopped hard‑boiled eggs, buttered stale bread, seasoned with salt, pepper, and lemon juice.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Watercress and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 579 recipes. Both carry coumarin, which smells sweet, hay. The science ↓

Watercress Sandwiches

Ingredients

Directions

Prepare the filling

  1. Wash and dry the watercress thoroughly, pressing out all moisture.

  2. Cut the watercress into small pieces, removing the stems.

  3. Mix the chopped hard-boiled eggs with salt and pepper.

Assemble the sandwiches

  1. Slice the stale loaf into thin slices.

  2. Spread fresh butter on each slice of bread.

  3. Place the egg and watercress mixture between two slices of bread.

  4. Sprinkle lemon juice over the sandwich.

  5. Press the slices together firmly.

  6. Remove the crusts.

  7. Cut the sandwich into small squares.

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. Watercress + lemontop 3% of all pairs
    Smell alikestrong
    Cooked together579 recipes

    Shared aroma: coumarin (sweet, hay).

  2. Pepper + lemontop 3% of all pairs
    Smell alikestrong
    Cooked together27,047 recipes

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

  3. Bread + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together27,232 recipes

    Shared aroma: delta-decalactone (sweet, creamy).

  4. Watercress + peppertop 10% of all pairs
    Smell alikemoderate
    Cooked together983 recipes

    Shared aroma: coumarin (sweet, hay).

  5. Egg + breadtop 13% of all pairs
    Smell alikemoderate
    Cooked together22,662 recipes

    Shared aroma: (e)-2-octenal (fatty, green).

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

What each ingredient does

Watercress
Adds a fresh, peppery flavour and crisp texture to the filling.
Hard-boiled eggs
Provide the creamy, rich body of the filling.
Stale loaf of bread
Forms the structure holding the filling; stale bread slices cleanly and holds its shape.
Fresh butter
Adds richness and a layer that keeps the bread from soaking up moisture.

The step that matters

Press out all moisture from the watercress. Wet watercress releases water into the filling and soggy bread, making the sandwich limp. Drying it thoroughly keeps the bread firm and the texture crisp.

“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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