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 ↓
Tomatoes and Mushrooms
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare and layer
Wash and peel the tomatoes, then slice them.
Layer the sliced tomatoes and mushrooms in a baking dish.
Season the tomato sauce with finely chopped onion and pour it over the layers.
Top with buttered bread crumbs.
Bake
Bake at 400°F (200°C) 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.
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).
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Tomato + mushroomtop 7% of all pairsSmell alikemoderateCooked together2,719 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
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Mushroom + buttertop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
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Tomato + oniontop 8% of all pairsSmell alikemoderateCooked together20,633 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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Tomatoes
- Form the main layers and release juices that moisten the dish as it bakes.
- Mushrooms
- Add moisture and savoury, earthy flavour between the tomato layers.
- Tomato sauce
- Adds moisture and tangy flavour that soaks into the layers.
- Bread crumbs
- Form a crisp topping that absorbs some juices and browns in the oven.
- Butter
- Adds fat that helps the bread crumbs brown evenly and adds richness.
- Onion
- Contributes savoury aroma and depth to the tomato sauce.
The step that matters
Bake until golden brown. The buttered crumbs brown through Maillard reactions and fat, so the colour is the cue for doneness. Too little baking leaves the topping pale and the layers watery, while too long can scorch the crumbs.
Swap the onion
How well each one fits the dish's main ingredients (tomato, mushroom, bread, sauce, butter):
- Capsicumfits better
- Shallotfits better
- Asparagusfits about as well
- Onionthe original
Fit is the average pairing score against tomato, mushroom, bread, sauce, butter. 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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