Why it works: Tomato and pepper are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 17,923 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Tomato Omelet
Ingredients
Directions
Prepare the tomatoes
Skin the tomatoes and cut them into slices or cubes.
Fry the tomatoes in butter and drain on unglazed paper.
Make the omelet
Beat the eggs and season with salt and pepper.
Pour the eggs into a buttered omelet pan.
When the eggs are set, place the fried tomatoes in the center and fold the omelet.
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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Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Pepper + buttertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Tomato + buttertop 22% of all pairsSmell alikemoderateCooked together6,918 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Egg + peppertop 33% of all pairsSmell alikelowCooked together50,580 recipes
Shared aroma: 2-nonenal (fatty, green).
Egg and pepper barely smell alike, yet cooks put them together in 50,580 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Tomatoes
- Provide moisture and a slightly acidic, sweet flavor that contrasts with the rich eggs.
- Eggs
- Set when heated to form the structure of the omelet around the filling.
- Butter
- Adds richness and helps keep the eggs from sticking while frying.
The step that matters
When the eggs are set, fold the omelet. Eggs that are still runny will tear when folded, while overcooked eggs become dry and rubbery. Folding once the surface has just set keeps the omelet tender and the filling enclosed.
Swap the tomato
How well each one fits the dish's main ingredients (egg, pepper, butter):
- Capsicumfits better
- Asparagusfits better
- Chivefits better
- Tomatothe original
Fit is the average pairing score against egg, pepper, 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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