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Lettuce Sandwiches

A sandwich made with white bread and tender lettuce leaves, optionally topped with salad dressing, nasturtium, mustard, or hard‑boiled egg yolk.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Lettuce and mustard match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,356 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Lettuce Sandwiches

Ingredients

Directions

  1. Cut white bread into thin slices and remove all crusts.

  2. Place a tender lettuce leaf on one slice and spread with salad dressing.

  3. Top with another slice of bread and press gently together.

  4. Add nasturtium leaves or flowers, mustard, or yolk of hard-boiled egg if desired.

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. Lettuce + mustardtop 1% of all pairs
    Smell alikestrong
    Cooked together1,356 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  2. Bread + eggtop 13% of all pairs
    Smell alikemoderate
    Cooked together22,662 recipes

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

  3. Bread + lettucetop 15% of all pairs
    Smell alikemoderate
    Cooked together602 recipes

    Shared aroma: nonanal (fat, citrus).

  4. Bread + mustardtop 16% of all pairs
    Smell alikemoderate
    Cooked together1,484 recipes

    Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).

  5. Mustard + eggtop 28% of all pairs
    Smell alikemoderate
    Cooked together9,210 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

White bread
Provides the soft, thin structure that holds the filling together.
Tender lettuce leaves
Adds crisp, cool moisture and fresh texture between the bread slices.
Salad dressing
Adds fat, acidity and flavour, and moistens the bread so the filling sticks.

The step that matters

Spreading the dressing. Too much dressing soaks through thin bread and makes it soggy, while too little leaves the lettuce dry and bland. A thin, even layer seasons the sandwich without softening the bread too quickly.

Swap the mustard

The recipe marks mustard as optional. How well each one fits the dish's main ingredients (bread, lettuce, egg):

  1. Leekfits about as well
  2. Asparagusfits about as well
  3. Spinachfits about as well
  4. Mustardthe original

Fit is the average pairing score against bread, lettuce, egg. 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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