Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Omelet
Ingredients
Directions
Prepare the eggs
Separate the yolks from the whites of the egg.
Beat the yolks until thick and lemon colored; add salt, pepper, and hot water.
Beat the whites until stiff and dry, then carefully fold them into the yolk mixture.
Cook and serve
Heat a frying pan, add butter, and grease both sides and bottom.
Pour in the mixture and cook slowly on the stove until the omelet is puffed and light brown underneath.
Place the pan in the oven until the omelet is firm to the touch.
Fold the omelet and turn it onto a hot plate to serve.
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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Egg + milktop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
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Butter + peppertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Milk + peppertop 22% of all pairsSmell alikemoderateCooked together26,984 recipes
Shared aroma: ethyl 2-methylbutyrate (fruity, apple).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Whites trap air for lift and structure, while yolks add richness and set into a tender body.
- Water or milk
- Adds moisture that turns to steam, keeping the omelet light and tender.
- Butter
- Greases the pan so the omelet releases cleanly and adds richness and browning.
The step that matters
Folding the whites into the yolks. Stiff whites hold air that gives the omelet its lift. Folding gently keeps that air in; stirring or deflating the whites makes the omelet flat and dense.
“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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