Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Macaroni and Cheese
Ingredients
Directions
The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the pasta
Break macaroni into 1-inch pieces.
Cook the macaroni in a large pot of boiling salted water until tender.
Drain the macaroni, then rinse the macaroni with cold water.
Make the sauce
Melt butter in a saucepan.
Add flour to the melted butter to make a roux.
Gradually whisk in milk.
Cook the mixture until thickened.
Add the cooked macaroni and cheese to the sauce, then mix well.
Bake and serve
Transfer the mixture to a buttered baking dish.
Top the mixture with buttered crumbs.
Place the baking dish in a pan of hot water.
Bake in a 400°F (200°C) oven until browned.
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.
Photo for illustrative purposes only · Contact us to use it
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.
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + cheesetop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Milk + cheesetop 10% of all pairsSmell alikemoderateCooked together4,426 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Macaroni
- Forms the bulk and structure of the dish once cooked until tender.
- Flour
- Thickens the melted butter into a roux that gives the sauce body.
- Milk
- Forms the liquid base of the sauce, which thickens as it cooks.
- Cheese
- Adds rich flavour and creamy texture to the sauce.
- Butter
- Adds richness and fat to the roux and helps the crumbs brown.
The step that matters
Cook the roux and milk until thickened. Flour must cook in the melted butter and the milk must be added gradually and stirred, or the sauce can turn lumpy. Cooking until thickened lets the starch swell so the sauce coats the pasta.
“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.
More macaroni and cheese recipes
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.

Cheese Making50 recipes
Cheese Fritters34 recipes
Cheese Omelette31 recipes
Rice and Cheese Casserole23 recipes