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
Prepare the ham
Boil the ham until very tender, then let it cool in the cooking water.
Chop nearly half of the ham finely.
Make the filling
In a bowl, rub the yolks of the hard-boiled eggs smooth with a knife.
Add the mustard, salt, and black pepper to the egg yolks.
Mix in enough melted butter to make the mixture smooth and creamy.
Thin the mixture with good vinegar and combine it well with the chopped ham.
Assemble
Spread butter and salad on each side of the bread or biscuits before assembling the sandwiches.
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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Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Egg + breadtop 13% of all pairsSmell alikemoderateCooked 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
- Ham
- Provides the meaty bulk and savory flavor of the filling.
- Hard-boiled egg yolks
- Rubbed smooth, they give the filling a creamy, rich body.
- Melted butter
- Adds fat that makes the yolk mixture smooth and spreadable.
- Best mustard
- Adds sharp, pungent flavor that cuts through the richness of the yolks and fat.
- Good vinegar
- Adds acidity that brightens the filling and thins it to a spreadable consistency.
The step that matters
Mixing in the melted butter. Butter must be added gradually and blended well; adding it too fast or while too hot can split or loosen the yolk mixture instead of making it smooth and creamy.
Swap the mustard
How well each one fits the dish's main ingredients (ham, egg, pepper, butter, vinegar, bread):
- Capsicumfits about as well
- Mustardthe original
- Asparagusfits about as well
- Shallotfits about as well
Fit is the average pairing score against ham, egg, pepper, butter, vinegar, 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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