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Roast Beef Sandwiches

A sandwich made with roast beef, bread, mustard or mayonnaise, and optional lettuce.

From an old cookbook · modernised transcription
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Why it works: Mustard and lettuce 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 ↓

Roast Beef Sandwiches

Ingredients

Directions

Assemble

  1. Spread mustard or mayonnaise on a slice of bread.

  2. Layer slices of roast beef on top.

  3. Add lettuce if desired.

  4. Top with another slice of bread.

Serve

  1. Cut into halves or quarters for serving.

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. Mustard + lettucetop 1% of all pairs
    Smell alikestrong
    Cooked together1,356 recipes

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

  2. Beef + breadtop 13% of all pairs
    Smell alikemoderate
    Cooked together4,032 recipes

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

  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. Beef + mustardtop 17% of all pairs
    Smell alikemoderate
    Cooked together1,664 recipes

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

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

What each ingredient does

Slices of roast beef
Provides the main protein and bulk of the sandwich filling.
Bread of choice
Provides the structure that holds the filling together.
Mustard or mayonnaise
Adds moisture and a sharp or creamy flavour that carries through the sandwich.

Swap the lettuce

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

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

Fit is the average pairing score against beef, bread, mustard. 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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