Why it works: Parsley and pepper 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 quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Preheat the oven to 400°F (200°C).
Spread the butter on a flat baking dish.
Layer very thin slices of Gruyère cheese on the butter.
Assemble and bake
Break the eggs on top of the cheese, keeping the yolks whole.
Grate the remaining Gruyère cheese and mix it with the parsley.
Sprinkle the cheese and parsley mixture over the eggs.
Bake for 5 to 7 minutes until the eggs are set.
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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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Cheese + buttertop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Butter + parsleytop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
-
Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Cheese + peppertop 18% of all pairsSmell alikemoderateCooked together7,861 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
- Set to a firm but tender texture when baked, forming the main body of the dish.
- Gruyère cheese
- Melts and browns on top while adding rich, savoury flavour and a binding layer under the eggs.
- Butter
- Adds fat and richness, helping the cheese layer crisp and keeping the dish from sticking.
The step that matters
Bake for 5 to 7 minutes until the eggs are set. Egg whites set at moderate heat while yolks stay soft; overbaking tightens the proteins and makes the yolks chalky and dry, so check at the low end of the time.
“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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