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
Melt the butter.
Add the flour and whisk until smooth.
Gradually whisk in the milk until the sauce thickens.
Season the sauce with Hiawatha salt and Wampum pepper.
Separate the yolks from the whites of the hard‑boiled eggs.
Chop the whites finely and add them to the sauce.
Assemble and serve
Cut the toast slices lengthwise and arrange them on a platter.
Pour the sauce over the toast.
Force the yolks through a potato ricer and sprinkle them on top of the sauce.
Garnish with parsley and 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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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
- Hard boiled eggs
- Chopped whites add body and savoury flavour to the sauce, while pressed yolks give a crumbly topping.
- Butter
- Provides fat and a rich flavour as the base for the sauce.
- Flour
- Thickens the butter and milk into a smooth, stable sauce.
- Milk
- Forms the liquid of the sauce, which thickens as the flour starch swells.
- Toast
- Gives a crisp base that holds the sauce.
The step that matters
Gradually whisk in the milk until the sauce thickens. Adding milk slowly while whisking keeps the flour smooth and prevents lumps. Cooking until the sauce thickens lets the starch swell fully, so the sauce coats the toast evenly.
Swap the parsley
How well each one fits the dish's main ingredients (egg, butter, pepper, flour, milk):
- Nutmegfits about as well
- Cinnamonfits about as well
- Parsleythe original
- Cardamomfits about as well
Fit is the average pairing score against egg, butter, pepper, 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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