Why it works: Parsley and tarragon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,563 recipes. Both carry estragole, which smells anise, licorice. The science ↓
Fried Eggs a LA Suisse
Ingredients
Directions
Prepare
Break the eggs into a bowl and mix well.
Add the grated Gruyère cheese, melted butter, chopped chives, parsley, and tarragon.
Season with pepper and coarse sea salt.
Fry and serve
Drop spoonfuls of the mixture into hot clarified butter.
Fry until light brown, then dish up and serve hot.
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 + tarragontop 1% of all pairsSmell alikestrongCooked together1,563 recipes
Shared aroma: estragole (anise, licorice).
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Chive + tarragontop 1% of all pairsSmell alikestrongCooked together589 recipes
Shared aroma: coumarin (sweet, hay).
-
Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Chive + parsleytop 3% of all pairsSmell alikestrongCooked together2,150 recipes
Shared aroma: coumarin (sweet, hay).
-
Tarragon + peppertop 5% of all pairsSmell alikestrongCooked together2,399 recipes
Shared aroma: estragole (anise, licorice).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Set when heated, binding the mixture into soft, cohesive fried pieces.
- Gruyère cheese
- Melts and browns in the hot fat, adding richness and a savoury, nutty flavour.
- Melted butter
- Adds fat and richness, contributing moisture and a smoother texture to the mixture.
- Chives, parsley and tarragon
- Contribute fresh herbal aroma and flavour that brightens the rich eggs and cheese.
The step that matters
Fry until light brown. Frying over hot clarified butter sets the egg quickly and browns the cheese. Too little heat leaves the mixture pale and greasy, while overcooking makes it dry and rubbery, so the spoonfuls should be removed once lightly browned.
Swap the chive
How well each one fits the dish's main ingredients (egg, gruyere cheese, butter, parsley, tarragon, pepper):
- Shallotfits about as well
- Chivethe original
- Potatofits less well
- Mustardfits less well
Fit is the average pairing score against egg, gruyere cheese, butter, parsley, tarragon, 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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