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 Ox Toast
Ingredients
Directions
Make the sauce
In a chafing dish, melt the butter until bubbling.
Add the flour, salt, and pepper, stirring well.
Gradually whisk in the milk until smooth and hot.
Stir in the chopped egg whites.
Serve
Pour the mixture over the toast.
Strain the egg yolks over the top and garnish with 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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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
- Enriches the sauce and carries flavor as it melts into the base.
- Flour
- Thickens the milk into a smooth white sauce as it cooks.
- Milk
- Forms the liquid base that the flour thickens into a creamy sauce.
- Hard boiled egg whites
- Add body and texture to the sauce as chopped pieces.
- Hard boiled egg yolks
- Provide a crumbly, rich topping when pushed through a strainer.
The step that matters
Whisk the milk in gradually. Adding milk slowly while whisking keeps the flour evenly dispersed, so the sauce cooks smooth instead of forming lumps.
Swap the parsley
How well each one fits the dish's main ingredients (butter, flour, pepper, milk, egg):
- Nutmegfits about as well
- Cinnamonfits about as well
- Parsleythe original
- Cardamomfits about as well
Fit is the average pairing score against butter, flour, pepper, milk, egg. 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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