Why it works: Egg and bread are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 22,662 recipes. Both carry (e)-2-octenal, which smells fatty, green. The science ↓
Egg Sandwich
Ingredients
Directions
Chop the onion and hard-boiled eggs finely.
Mix the chopped ingredients with salad dressing until it forms a paste.
Spread the mixture on thin slices of buttered bread.
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.
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Egg + breadtop 13% of all pairsSmell alikemoderateCooked together22,662 recipes
Shared aroma: (e)-2-octenal (fatty, green).
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Onion + breadtop 15% of all pairsSmell alikemoderateCooked together8,676 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Egg + oniontop 34% of all pairsSmell alikelowCooked together23,333 recipes
Shared aroma: 2,4-decadienal (seaweed).
Egg and onion barely smell alike, yet cooks put them together in 23,333 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Hard-boiled eggs
- Provide the main filling bulk and rich, soft texture.
- Onion
- Adds sharp, aromatic flavour that cuts through the richness of the eggs.
- Salad dressing
- Binds the chopped ingredients into a spreadable paste and adds moisture and tang.
- Buttered bread
- Provides the base that holds the filling and adds richness through butter.
The step that matters
Mix the chopped ingredients with salad dressing until it forms a paste.. Too little dressing leaves the filling crumbly and hard to spread, while too much makes it wet and soggy the bread. Chopping finely helps the mixture bind evenly.
Swap the onion
How well each one fits the dish's main ingredients (egg, bread):
- Asparagusfits better
- Leekfits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against egg, 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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