Why it works: Parmesan cheese and gruyere cheese match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 152 recipes. Both carry ethyl 2-methylbutyrate, which smells fruity, apple. The science ↓
Macaroni “au Gratin.”
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the macaroni
Boil the macaroni in salted water until cooked, then pour cold water over it and drain.
Make the sauce
In a saucepan, blend a little flour into the milk or cream, then add ¼ ounce of butter, parsley, onion, pepper, salt, and nutmeg.
Cook the sauce over low heat until thick, then strain through a fine sieve.
Assemble and bake
Stir the sauce into the drained macaroni along with most of the cheese and the butter.
Transfer the mixture to a buttered baking dish, sprinkle with remaining cheese and a little hot butter on top.
Bake at 400°F (200°C) until golden brown.
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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Parmesan cheese + gruyere cheesetop 1% of all pairsSmell alikestrongCooked together152 recipes
Shared aroma: ethyl 2-methylbutyrate (fruity, apple).
-
Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Parsley + nutmegtop 3% of all pairsSmell alikestrongCooked together5,062 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Pepper + nutmegtop 7% of all pairsSmell alikestrongCooked together13,015 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Macaroni
- Forms the body of the dish, giving the gratin its bulk and chew.
- Parmesan cheese
- Adds savory, salty flavor and helps the top brown and crisp.
- Gruyere cheese
- Melts smoothly into the sauce, adding nutty flavor and stretch.
- Milk or cream
- Forms the liquid base of the sauce, providing moisture and richness.
- Butter
- Adds fat for richness and helps the top turn golden brown.
- Flour (in the method)
- Thickens the milk or cream into a smooth sauce that coats the pasta.
The step that matters
Cook the sauce until thick. The sauce must thicken fully over low heat so it coats the macaroni. Cooking too hot can scorch the milk or cause it to curdle, and a thin sauce will run off the pasta and make the gratin watery.
Swap the onion
How well each one fits the dish's main ingredients (parmesan cheese, gruyere cheese, butter, milk, parsley, pepper, nutmeg):
- Potatofits better
- Spinachfits better
- Capsicumfits better
- Onionthe original
Fit is the average pairing score against parmesan cheese, gruyere cheese, butter, milk, parsley, pepper, nutmeg. 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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