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
Beat the eggs in a bowl and season with coarse sea salt and black pepper.
Chop the tomatoes and green peppers.
Cook and serve
Melt butter in a skillet over medium heat.
Add the chopped vegetables and sauté until soft.
Pour the beaten eggs over the vegetables and cook until set.
Fold the omelet in half and serve whole.
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).
-
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
- Eggs
- Set into a tender structure that forms the body of the omelette.
- Tomatoes
- Add moisture and a mild acidity that brightens the eggs.
- Green peppers
- Add crisp-soft texture and a fresh, slightly bitter flavour once sautéed.
- Butter
- Adds richness and helps prevent the eggs from sticking to the skillet.
The step that matters
Cook the eggs until just set. Eggs turn firm and rubbery when overcooked because the proteins tighten and squeeze out water. Removing the pan from heat while the surface is still slightly moist keeps the omelette tender.
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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