Why it works: Tomato and mushroom are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 2,719 recipes. Both carry 1-octen-3-one, which smells mushroom, metallic. The science ↓
Variations of the Omelet
Ingredients
Directions
Make the omelet
Beat the eggs in a bowl and season with salt and pepper.
Pour the egg mixture into a heated, buttered skillet.
Cook until the edges begin to set, then add your choice of fillings like parsley, cheese, or ham.
Fold the omelet in half and cook until fully set.
Serve
Serve with your choice of sauce or additional toppings.
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 + 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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Parsley + tomatotop 8% of all pairsSmell alikemoderateCooked together5,398 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Butter + cheesetop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Tomato + peastop 9% of all pairsSmell alikemoderateCooked together1,058 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Set into the structure of the omelet as they cook, forming its body.
- Butter
- Coats the hot skillet so the egg releases cleanly and browns lightly.
- Grated cheese
- Melts into the omelet, adding richness and a creamy texture.
- Cooked ham
- Adds savory flavor and chew to the filling.
The step that matters
Cook until the edges begin to set, then fold. Eggs set quickly under heat. Folding too early tears the delicate, still-liquid center, while overcooking makes the eggs tough and rubbery.
Swap the parsley
How well each one fits the dish's main ingredients (egg, tomato, sauce, mushroom, peas, butter, cheese):
- Thymefits about as well
- Capersfits about as well
- Tarragonfits about as well
- Parsleythe original
Fit is the average pairing score against egg, tomato, sauce, mushroom, peas, butter, cheese. 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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