Why it works: Parsley and pepper 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 ↓
Savoury Macaroni
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
Preheat the oven to 400°F (200°C).
Assemble
In a pie dish, layer the ingredients: start with macaroni, then add chopped onion, sliced tomatoes, and pats of margarine.
Sprinkle breadcrumbs, grated cheese, and parsley on top.
Season with salt and pepper.
Bake
Bake for 30 minutes 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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Parsley + peppertop 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).
-
Tomato + oniontop 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).
-
Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
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 a starchy, filling base.
- Milk
- Adds moisture and creaminess to the layers as the dish bakes.
- Margarine
- Adds fat, which carries flavour and helps the top brown in the oven.
- Grated cheese
- Melts into the layers and browns on top, adding savoury richness.
- Tomatoes
- Add moisture and a light acidity that balances the rich cheese and fat.
- Breadcrumbs
- Form a crisp, golden topping as they toast in the oven.
Swap the parsley
The recipe marks parsley as optional. How well each one fits the dish's main ingredients (milk, tomato, onion, cheese, pepper):
- Garlicfits better
- Thymefits better
- Celeryfits better
- Parsleythe original
Fit is the average pairing score against milk, tomato, onion, 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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