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 ↓
Tomato Sandwiches
Ingredients
Directions
Butter both slices of bread.
Spread a thin layer of tomato paste on one slice. Add a little mustard, pepper, and salt.
Press the other slice of bread on top.
Remove the crusts and cut into neat pieces.
Mix a little meat extract with the tomato paste for extra flavor.
Alternatively, use slices of skinned ripe tomatoes instead of tomato paste.
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.
-
Bread + buttertop 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).
-
Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Bread + tomatotop 10% of all pairsSmell alikemoderateCooked together1,013 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Tomato + mustardtop 11% of all pairsSmell alikemoderateCooked together2,482 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Tomato paste
- Provides concentrated tomato flavor and moisture that seasons the bread.
- Butter
- Adds fat and richness and helps keep the bread from soaking up the filling.
- Mustard
- Adds sharpness that balances the sweetness of the tomato.
Swap the tomato
The recipe marks tomato as optional. How well each one fits the dish's main ingredients (bread, butter, mustard, pepper, meat):
- Shallotfits better
- Lettucefits better
- Capsicumfits better
- Tomatothe original
Fit is the average pairing score against bread, butter, mustard, pepper, meat. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Meatless Tomato Soup23 recipes
Tomato Soup526 recipes
Brown Bread461 recipes
Cream of Tomato Soup107 recipes