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 ↓
Tomato Toast
6 small rounds of toastIngredients
Directions
Prepare the tomatoes
Dip the tomatoes in boiling water to remove the skin.
Chop the tomatoes finely.
Make the topping
Heat the butter in a frying pan.
Add the chopped tomatoes and fry for five minutes.
Season with salt and pepper.
Beat the egg and stir it into the tomatoes.
Add the bread crumbs and cook for two more minutes.
Grate the cheese and mix it into the tomato mixture without cooking further.
Serve
Spread the mixture on the toast.
Place the mixture in the center of a dish.
Arrange the toast cut into small pieces around it.
Serve hot.
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).
-
Bread + cheesetop 7% of all pairsSmell alikemoderateCooked together2,130 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).
-
Butter + cheesetop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Tomato + breadtop 10% of all pairsSmell alikemoderateCooked together1,013 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Tomatoes
- Provide the main body and juicy, slightly acidic flavour of the topping.
- Egg
- Binds the tomato mixture as it cooks, giving it a set, spoonable texture.
- Bread crumbs
- Absorb excess tomato liquid and help thicken the mixture.
- Cheese
- Adds savoury richness and melts into the topping for a creamy finish.
- Butter
- Adds fat and rich flavour to the frying pan and the topping.
The step that matters
Cook the egg into the tomatoes gently. Egg proteins set with heat, so adding the beaten egg to hot tomatoes and stirring briskly keeps it smooth rather than scrambled into curds.
Swap the tomato
How well each one fits the dish's main ingredients (butter, egg, bread, cheese, pepper):
- Capsicumfits better
- Asparagusfits about as well
- Potatofits about as well
- Tomatothe original
Fit is the average pairing score against butter, egg, bread, cheese, 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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