Why it works: Lemon and pepper 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 ↓
Tomato Sandwiches
Ingredients
Directions
Prepare the tomatoes
Pour boiling water over the tomatoes and let them sit for 2 minutes.
Drain the tomatoes and cover them with cold water until completely cooled.
Dry the tomatoes.
Remove the skins from the tomatoes.
Slice the tomatoes thinly.
Season the tomato slices with salt and pepper.
Sprinkle the tomato slices with lemon juice or vinegar to taste.
Assemble and serve
Prepare thin slices of buttered bread.
Cut out rounds of suitable size from the bread.
Place slices of tomato between two rounds of bread.
Press the sandwich together firmly.
Serve on a nicely arranged dish garnished with small salad or watercress.
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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Lemon + peppertop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Butter + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Tomato + breadtop 10% of all pairsSmell alikemoderateCooked together1,013 recipes
Shared aroma: 2-nonenal (fatty, green).
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Tomato + lemontop 11% of all pairsSmell alikemoderateCooked together4,592 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
- Ripe firm tomatoes
- Provide the main filling, with juice and flavour that moisten the bread.
- Creamed butter
- Spread on the bread to add richness and a fat barrier against soggy slices.
- White or brown bread
- Forms the structure that holds the filling together.
- Lemon juice or vinegar
- Adds acidity that brightens the sweetness of the tomatoes.
The step that matters
Drying the tomatoes. Tomatoes release water once sliced, and excess moisture soaks into the bread and makes the sandwich soggy. Thorough drying before assembly keeps the bread intact.
Swap the tomato
How well each one fits the dish's main ingredients (butter, bread, lemon, pepper):
- Capsicumfits about as well
- Asparagusfits about as well
- Shallotfits about as well
- Tomatothe original
Fit is the average pairing score against butter, bread, lemon, pepper. 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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