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 ↓
Scalloped Tomatoes
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Preheat the oven to 350°F (175°C).
Butter a baking dish.
Layer the dish
Layer half of the bread crumbs.
Layer half of the sliced tomatoes seasoned with pepper, salt, and sugar.
Add half of the onion slices.
Repeat the layers, finishing with the remaining crumbs.
Make the topping and bake
Beat the egg in a bowl.
Add a pinch of salt.
Stir in the milk.
Mix in toasted bread crumbs until thick enough to spread over the tomatoes.
Dot with bits of butter.
Sprinkle the top with baking powder.
Bake for 30 to 45 minutes until golden brown.
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.
Photo for illustrative purposes only · Contact us to use it
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).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Tomato + oniontop 8% of all pairsSmell alikemoderateCooked together20,633 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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Bread crumbs
- Absorb the liquid and give the dish body so it holds its layers.
- Tomatoes
- Provide moisture and a bright acidic flavour that cooks down into the dish.
- Egg
- Sets when heated, giving the topping structure and helping it hold together.
- Milk
- Adds moisture and softness, thickening with the crumbs into a spreadable topping.
- Butter
- Adds richness and helps the top brown as it bakes.
- Sugar
- Adds sweetness that balances the acidity of the tomatoes.
The step that matters
Thickening the topping. The crumbs must be stiff enough to spread. Too much liquid makes the topping runny, so it soaks into the tomatoes and bakes soggy instead of setting. Egg proteins set with heat, so the topping firms as it bakes.
Swap the onion
How well each one fits the dish's main ingredients (bread, butter, tomato, pepper, sugar, egg, milk):
- Capsicumfits better
- Potatofits better
- Asparagusfits better
- Onionthe original
Fit is the average pairing score against bread, butter, tomato, pepper, sugar, egg, milk. 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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