Why it works: Egg and butter match in chemistry and in kitchens. They rank in the top 8% of all ingredient pairs, and 118,511 recipes mention both. Both carry nonanal, which smells fat, citrus. The science ↓
The recipe
Ingredients
Contains: egg, milk (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Prepare
Boil the eggs until hard, then cut the whites into shreds.
Rub the yolks through a coarse wire sieve.
Make the sauce
Prepare a thick white sauce and stir in the chopped parsley, fresh cream, salt, and pepper.
Heat the egg whites in the sauce.
Serve and brown
Serve the mixture in a border of hot mashed potatoes.
Cover with the yolks, sprinkle with oiled butter, and lightly brown under a broiler.
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 aroma chemistry they share, and how many recipes mention both.
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Egg + buttertop 8% of all pairsAroma overlapstrongMentioned together118,511 recipes
Shared aroma: nonanal (fat, citrus).
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Parsley + peppertop 2% of all pairsAroma overlapstrongMentioned together34,118 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Parsley + potatotop 3% of all pairsAroma overlapstrongMentioned together2,855 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Cream + buttertop 3% of all pairsAroma overlapstrongMentioned together41,494 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Pepper + potatotop 5% of all pairsAroma overlapstrongMentioned together8,303 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Whites set into shreds and yolks form the rich topping, giving structure and body to the dish.
- Fresh cream
- Adds richness and smoothness to the white sauce, giving a softer, moister texture.
- Hot mashed potatoes
- Form a warm border that holds the sauced egg mixture and adds starchy body.
- Oiled butter
- Adds fat that helps the yolk topping brown lightly under the broiler.
The step that matters
Lightly brown under a broiler. The broiler browns the surface quickly, so the topping can darken or dry out if left unattended. Watching it closely keeps the yolks moist and the butter golden.
“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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