Why it works: Tomato and egg are a kitchen classic. They rank in the top 23% of all ingredient pairs, and 5,162 recipes mention both. Both carry 2-nonenal, which smells fatty, green. The science ↓
The recipe
Serves 2Ingredients
Contains: egg, milk, wheat (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Method written by CompKitchen from the ingredient list. Not the original author's method, not kitchen-tested.
Heat the oven to 400°F (204°C). Halve the roma tomatoes lengthwise and place them cut side up on a baking sheet. Drizzle with 1 tablespoon olive oil, sprinkle with the salt, and scatter the thinly sliced garlic clove over the top.
Roast for 45 minutes until the tomatoes soften and the edges brown. Let them cool for 10 minutes, then roughly chop them and keep any pan juices.
While the tomatoes roast, slice the mozzarella thinly. Stack the basil leaves and tear them into pieces.
Heat a nonstick skillet over medium-low heat. Fry the eggs one at a time until the whites are set and the yolks are firm, about 3 minutes. Eggs should reach 160°F (71°C) internally. Set aside.
Brush one side of each of the 4 bread slices with olive oil. Turn them oiled side down on a clean work surface.
On 2 bread slices, layer half the mozzarella, half the chopped tomatoes with some juices, torn basil, and a fried egg. Top with the remaining mozzarella and bread slices, oiled side out.
Heat the same skillet over medium heat. Cook the sandwiches 3 to 4 minutes per side, pressing gently, until the bread is golden and the cheese melts. Cut in half and serve warm.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.
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Tomato + eggtop 23% of all pairsAroma overlapmoderateMentioned together5,162 recipes
Shared aroma: 2-nonenal (fatty, green).
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Tomato + olivetop 1% of all pairsAroma overlapstrongMentioned together14,164 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Tomato + basiltop 2% of all pairsAroma overlapstrongMentioned together3,979 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Tomato + garlictop 2% of all pairsAroma overlapmoderateMentioned together14,075 recipes
Shared aroma: furaneol (caramel, strawberry).
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Olive + garlictop 3% of all pairsAroma overlapmoderateMentioned together23,449 recipes
Shared aroma: linalool (floral, citrus).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
Flavor stand-ins for the basil
How well each one fits the dish's main ingredients (tomato, olive, garlic, egg, bread):
- Basilthe original
- Parsleyabout as good a flavor fit
- Thymeabout as good a flavor fit
- Corianderabout as good a flavor fit
Fit is the average pairing score against tomato, olive, garlic, egg, bread. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
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