Why it works: Butter and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓
Ham Sandwiches
Ingredients
Directions
Make the filling
In a bowl, cream the butter.
Add mustard, salad oil, pepper, salt, and egg yolk; mix thoroughly.
Stir in enough chopped ham to achieve a consistent mixture.
Assemble the sandwiches
Spread the mixture between thin slices of bread.
For plain sandwiches, trim the crusts from the bread, butter them, and layer with thin slices of cold, boiled ham.
Optionally, spread a little mustard on the ham.
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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Butter + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Ham + breadtop 7% of all pairsSmell alikemoderateCooked together2,536 recipes
Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).
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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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Mustard + hamtop 14% of all pairsSmell alikelowCooked together747 recipes
Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).
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Mustard + breadtop 16% of all pairsSmell alikemoderateCooked together1,484 recipes
Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Creams with the other ingredients to give the filling a rich, spreadable body.
- Egg yolk
- Emulsifies the fat and liquids so the filling holds together smoothly.
- Mixed mustard
- Adds sharp, tangy flavour that cuts through the richness of the butter and ham.
- Chopped ham
- Provides the savoury meat flavour and bulk of the filling.
The step that matters
Stir in the ham until the mixture is consistent. Adding the ham before the butter, mustard and egg yolk are fully emulsified can leave the filling greasy or lumpy. Mixing thoroughly first gives an even spread that holds together on the bread.
Swap the white pepper
How well each one fits the dish's main ingredients (butter, mustard, egg, ham, bread):
- Capersfits better
- Tarragonfits better
- Nutmegfits better
- White pepperthe original
Fit is the average pairing score against butter, mustard, egg, ham, 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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