Why it works: Pepper and tomato 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.
Mix the flour with the butter, salt, and pepper.
Peel and finely chop the tomatoes.
Cook
Stir the flour mixture and tomatoes into the beaten eggs.
Fry the mixture in a skillet over medium heat until set.
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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Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Flour + peppertop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter barely smell alike, yet cooks put them together in 124,287 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 firm structure when cooked, forming the body of the omelet.
- Flour
- Thickens the egg mixture slightly, giving it a more tender, less runny texture.
- Butter
- Adds fat for richness and helps keep the omelet from sticking to the skillet.
- Tomatoes
- Add moisture and a fresh, slightly acidic flavor to the omelet.
The step that matters
Fry the mixture in a skillet over medium heat until set. Medium heat lets the eggs cook gently so they set evenly without browning too quickly or becoming tough and rubbery. Cooking too hot can toughen the proteins and scorch the bottom before the center sets.
Swap the tomato
How well each one fits the dish's main ingredients (egg, flour, butter, pepper):
- Chivefits better
- Shallotfits better
- Asparagusfits better
- Tomatothe original
Fit is the average pairing score against egg, flour, butter, pepper. 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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