Why it works: Butter and milk 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 ↓
Eggs a LA Golden Rod
Ingredients
Directions
Boil and peel the eggs
Boil the eggs for 30 minutes.
Cool and peel the eggs.
Make the sauce
In a saucepan, melt the butter.
Stir in the flour.
Gradually add the milk to make a white sauce.
Separate the yolks and whites of the eggs.
Chop the whites.
Add the chopped whites to the sauce.
Assemble and serve
Arrange the toast on a platter.
Pour the sauce over the toast.
Press the yolks through a strainer over the top of the dish.
Cut the remaining slice of toast into points.
Garnish the dish with the toast points and parsley.
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 + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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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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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 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).
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
- Chopped whites add body to the sauce, and pressed yolks give the dish its golden topping.
- Butter
- Fat that cooks with the flour and carries flavor into the sauce.
- All-purpose flour
- Starch that thickens the butter and milk into a smooth white sauce.
- Milk
- Liquid base of the white sauce, giving it moisture and a creamy texture.
The step that matters
Gradually add the milk to the butter and flour. Adding milk slowly while stirring lets the flour starch disperse evenly, so the sauce thickens smoothly instead of forming lumps.
Swap the parsley
How well each one fits the dish's main ingredients (egg, butter, flour, milk):
- Nutmegfits better
- Cinnamonfits better
- Capersfits about as well
- Parsleythe original
Fit is the average pairing score against egg, butter, flour, milk. 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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