Why it works: Parmesan cheese and cheese match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 1,041 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.
Cook the macaroni
In a pan, combine macaroni, water, salt, and onions with cloves.
Boil for 45 minutes, then drain the macaroni.
Layer and bake
In a deep dish, place pieces of butter at the bottom.
Sprinkle a layer of parmesan and gruyère cheese over the butter.
Add a layer of macaroni, then sprinkle with salt, pepper, and more cheese.
Repeat with another layer of macaroni and finish with a layer of cheese.
Pour melted butter over the top and bake in a 400°F (200°C) oven until golden brown.
Serve directly from the dish.
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 + cheesetop 3% of all pairsSmell alikestrongCooked together1,041 recipes
Shared aroma: ethyl 2-methylbutyrate (fruity, apple).
-
Clove + peppertop 5% of all pairsSmell alikestrongCooked together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
-
Butter + cheesetop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Butter + parmesan cheesetop 9% of all pairsSmell alikemoderateCooked together4,163 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 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
- Macaroni
- Forms the bulk of the gratin, giving body and structure between the cheese layers.
- Butter
- Adds richness and fat, helping the top brown and the dish stay moist.
- Parmesan cheese
- Adds savoury, salty flavour and helps form a browned crust on top.
- Gruyère cheese
- Melts into a creamy, stringy layer that binds the pasta together.
The step that matters
Baking until golden brown. Baking at 400°F browns the cheese and butter through the Maillard reaction and melting. Pull it too early and the layers stay pale and greasy; leave it too long and the cheese can turn dry and bitter.
Swap the clove
How well each one fits the dish's main ingredients (onion, butter, parmesan cheese, cheese, pepper):
- Garlicfits better
- Thymefits better
- Parsleyfits better
- Clovethe original
Fit is the average pairing score against onion, butter, parmesan cheese, cheese, 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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