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 ↓
Swiss Eggs
Ingredients
Directions
The book says “a very quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Spread the butter on a dish.
Lay the Swiss cheese slices on the butter.
Break the eggs on top, keeping the yolks whole.
Sprinkle with salt and pepper.
Bake and serve
Mix the chopped parsley and grated Swiss cheese.
Sprinkle the mixture over the eggs.
Bake in a very hot oven at 400°F (200°C) for about 5 minutes.
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 + swiss cheesetop 8% of all pairsSmell alikemoderateCooked together413 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Butter + parsleytop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
-
Swiss cheese + eggtop 16% of all pairsSmell alikemoderateCooked together405 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Set to form the body of the dish while the yolks stay whole.
- Butter
- Adds richness and moisture, helping the base cook gently and keep the eggs from sticking.
- Swiss cheese
- Melts and browns on top, adding savoury flavour and a golden crust.
The step that matters
Keeping the yolks whole. Breaking the eggs gently onto the cheese keeps the yolks intact. Broken yolks spread and cook unevenly in a short, very hot bake, so the eggs set less neatly.
Swap the parsley
How well each one fits the dish's main ingredients (butter, swiss cheese, egg, pepper):
- Parsleythe original
- Nutmegfits about as well
- Thymefits less well
- Dillfits less well
Fit is the average pairing score against butter, swiss cheese, 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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