Why it works: Bread and butter 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 sandwiches
Butter the slices of stale bread.
Cover one slice with thin slices of ham, removing skin and unpalatable parts.
Spread a little mustard on the ham.
Top with another slice of buttered bread.
Press the sandwich together and cut into pieces 2.5 by 2 inches.
Serve
Arrange on a napkin and garnish with parsley.
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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Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Bread + hamtop 7% of all pairsSmell alikemoderateCooked together2,536 recipes
Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).
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Mustard + parsleytop 8% of all pairsSmell alikestrongCooked together2,588 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Ham + mustardtop 14% of all pairsSmell alikelowCooked together747 recipes
Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).
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Butter + parsleytop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Stale bread
- Dry, sturdy slices hold the filling and stay firm when pressed together.
- Butter
- Coats the bread so it adds richness and keeps the bread from soaking up moisture from the filling.
- Ham
- Provides the savory, salty filling that forms the body of the sandwich.
- Mustard
- Adds sharp acidity and aroma that cut through the richness of the butter and ham.
The step that matters
Butter the bread to the edges. A thin, even layer of fat across the whole slice acts as a moisture barrier, so the stale bread stays firm rather than going soggy from the ham and mustard.
Swap the parsley
How well each one fits the dish's main ingredients (bread, butter, ham, mustard):
- Capersfits better
- Celeryfits about as well
- Tarragonfits about as well
- Parsleythe original
Fit is the average pairing score against bread, butter, ham, 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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