Why it works: Pepper and parsley 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 ↓
Macaroni
Ingredients
Directions
Prepare
Soak the macaroni in cold water.
In a large pot, bring 1 quart of water to a rapid boil and add 1 teaspoon of salt.
Add the macaroni and cook for 20 to 30 minutes until tender.
Make the sauce
In a separate pan, melt the butter and mix in the flour until smooth.
Add the chopped onion or onion juice and canned tomatoes to the mixture.
Season with salt, pepper, and parsley, and stew for 10 minutes.
Strain the sauce and stir in the grated cheese.
Serve
Pour the cheese sauce over the cooked macaroni 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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Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Tomato + parsleytop 8% of all pairsSmell alikemoderateCooked together5,398 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Butter + cheesetop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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 dish and gives it its chewy, starchy body.
- Butter
- Adds fat and richness and helps the flour form a smooth base for the sauce.
- Flour
- Thickens the butter and creates a smooth, body-giving base for the sauce.
- Canned tomatoes
- Add liquid, acidity and flavor to the sauce as it stews.
- Grated cheese
- Adds savory flavor and richness and helps thicken the sauce as it melts in.
The step that matters
Mix the flour into the melted butter until smooth. Cooking flour in fat forms a roux. If the flour is not fully blended, lumps form and the sauce stays grainy instead of thickening evenly.
Swap the onion
How well each one fits the dish's main ingredients (butter, flour, tomato, pepper, parsley, cheese):
- Capsicumfits better
- Carrotfits better
- Potatofits better
- Onionthe original
Fit is the average pairing score against butter, flour, tomato, pepper, parsley, cheese. 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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