Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Eggs a LA Golden Rod
Ingredients
Directions
Make the sauce
Make a roux by melting the butter and mixing in the flour.
Gradually add the milk, stirring until thickened.
Stir in the chopped egg whites, and season with salt and pepper.
Serve
Pour the mixture over toast.
Sprinkle with chopped parsley.
Press the yolks through a sieve and sprinkle over the top.
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 + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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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).
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
- Butter
- Melted with the flour to form a roux, enriching the sauce's flavour and smoothness.
- Flour
- Thickens the milk into a sauce when cooked with the melted butter.
- Milk
- Forms the liquid base that thickens into a creamy sauce with the roux.
- Hard boiled eggs
- Whites are chopped into the sauce for body, and yolks are sieved as a topping.
The step that matters
Gradually add the milk, stirring until thickened. Adding milk all at once can leave lumps of flour that do not smooth out. Adding it slowly while stirring lets the starch in the roux disperse evenly and thicken the sauce smoothly.
Swap the parsley
How well each one fits the dish's main ingredients (butter, flour, milk, egg, pepper):
- Nutmegfits about as well
- Cinnamonfits about as well
- Parsleythe original
- Cardamomfits about as well
Fit is the average pairing score against butter, flour, milk, egg, 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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