Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
To Poach Eggs
Ingredients
Directions
Prepare
Use eggs that are about 36 hours old for best results.
Bring nearly full of salted water to a boil in a frying pan, adding vinegar.
Break each egg into a cup, keeping the yolk whole.
Poach and serve
Gently slip the eggs into the boiling water and simmer until the whites are set.
Remove the eggs with a slotted spoon, drain, and serve on toast, ham, or bacon.
Serve with fried parsley.
Alternative methods
For a different method, place each egg in a buttered patty pan, add to a frying pan with boiling water, cover, and cook for 5 minutes.
To reserve poached eggs, roll in flour, dip in beaten egg, roll in breadcrumbs, and fry.
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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + parsleytop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + parsleytop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Vinegar + parsleytop 16% of all pairsSmell alikemoderateCooked together6,477 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Butter and flour 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 proteins form the delicate structure that holds the poached shape.
- Vinegar
- Acidity helps the egg whites coagulate faster and hold together in the water.
- Butter
- Fat coats the patty pan so the eggs release cleanly and add richness.
The step that matters
Gently slip the eggs into the boiling water. Eggs dropped in too roughly or in water that is too turbulent can break apart and scatter whites. Simmering gently lets the whites set around the yolk, keeping the egg intact.
Swap the parsley
How well each one fits the dish's main ingredients (egg, vinegar, butter, flour):
- Tarragonfits better
- Capersfits better
- Jalapenofits about as well
- Parsleythe original
Fit is the average pairing score against egg, vinegar, butter, flour. 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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