Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Sandwiches
Ingredients
Directions
Prepare the bread
Cut the bread into thin slices, crusts can remain.
Cream the butter until very soft and spread it on the bread slices.
Make the fillings
For lettuce sandwiches, shred lettuce, place on buttered bread, dot with salad dressing, cover with another slice, trim edges, and cut in half.
For egg sandwiches, chop cold hard boiled eggs, moisten with salad dressing, and spread between buttered bread slices.
For sardine sandwiches, drain sardines, remove skin and bones, mash with yolks of hard boiled eggs, season, and spread between buttered bread.
For ham sandwiches, mince cold boiled ham, moisten with salad dressing or melted butter, and spread between buttered bread.
For relish sandwiches, chop olives, pickles, and walnuts, moisten with salad dressing, and spread between buttered bread.
For brown bread sandwiches, mash neufchatel cheese, add chopped olives, and spread between slices of brown 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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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Lettuce + olivetop 5% of all pairsSmell alikestrongCooked together2,580 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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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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Lemon + olivetop 7% of all pairsSmell alikemoderateCooked together11,922 recipes
Shared aroma: 3-hexenal (apple, fruity).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Bread
- Provides the structure that holds the fillings together.
- Butter
- Softened butter spreads evenly and forms a moisture barrier against wet fillings.
- Salad dressing
- Moistens the fillings, adding richness and tang.
- Hard boiled eggs
- Provide a creamy, soft texture and body to the egg and sardine fillings.
- Neufchatel cheese
- Creamy base that binds the brown bread filling and adds mild tang.
The step that matters
Cream the butter until very soft. Butter that is only cool or firm tears the bread and spreads unevenly. Softened butter spreads smoothly, coats the slice fully, and helps keep moist fillings from soaking through.
Swap the lettuce
How well each one fits the dish's main ingredients (bread, butter, egg, pepper, lemon, ham, olive):
- Asparagusfits better
- Capsicumfits better
- Tomatofits better
- Lettucethe original
Fit is the average pairing score against bread, butter, egg, pepper, lemon, ham, olive. 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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