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Egg Sandwich

A sandwich made with a paste of mashed hard‑boiled egg yolks, salt, pepper, mustard, and olive oil spread on bread.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Mustard and olive match in chemistry and in kitchens. They rank in the top 8% of all ingredient pairs, and cooks put them together in 5,950 recipes. Both carry eucalyptol, which smells eucalyptus, herbal. The science ↓

Egg Sandwich

Ingredients

Directions

  1. Mash the yolk of hard boiled eggs in a bowl.

  2. Add salt, pepper, mustard, and olive oil to the yolk and mix to form a paste.

  3. Spread the egg paste on thin slices of bread.

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 + olivetop 8% of all pairs
    Smell alikestrong
    Cooked together5,950 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  2. Pepper + mustardtop 9% of all pairs
    Smell alikemoderate
    Cooked together15,430 recipes

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

  3. Olive + breadtop 9% of all pairs
    Smell alikemoderate
    Cooked together1,091 recipes

    Shared aroma: 2-undecenal (sweet).

  4. Pepper + olivetop 11% of all pairs
    Smell alikemoderate
    Cooked together30,263 recipes

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

  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

Yolk of hard boiled eggs
Forms the creamy body of the filling once mashed into a paste.
Mustard
Adds sharp, acidic flavour that cuts through the richness of the yolk.
Olive oil
Adds fat that makes the yolk paste smoother and richer in texture.

Swap the mustard

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

  1. Capsicumfits better
  2. Tomatofits better
  3. Spinachfits better
  4. Mustardthe original

Fit is the average pairing score against egg, pepper, olive, bread. 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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