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Lettuce Sandwich

A sandwich made with white bread, lettuce, mayonnaise, nasturtium leaves or flowers, mustard, and optional hard‑boiled egg yolk.

From an old cookbook · modernised transcription
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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 Sandwich

Ingredients

Directions

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

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

  3. Cover with another slice and press gently together.

  4. Add nasturtium leaves or flowers and a bit of mustard if desired.

  5. Optionally, add the yolk of a hard boiled egg.

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
Forms the thin slices that hold the filling together.
Fine tender lettuce leaves
Adds fresh, crisp texture and moisture to the sandwich.
Mayonnaise dressing
Adds fat and richness and helps the bread stay moist.
Nasturtium leaves or flowers
Adds a peppery, aromatic flavour to the filling.

Swap the lettuce

How well each one fits the dish's main ingredients (bread, mustard, egg):

  1. Horseradishfits better
  2. Shallotfits about as well
  3. Lettucethe original
  4. Chivefits about as well

Fit is the average pairing score against bread, mustard, 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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