Why it works: Onion and tomato are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 20,633 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Macaroni and Tomatoes
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.
Break macaroni into fine pieces and boil in water with the sliced onion until tender.
Drain the macaroni and add butter immediately.
Stir in the strained tomato juice, season, and slightly thicken.
Add the grated cheese and mix well.
Pour the mixture into a buttered baking dish.
Spread with cracker crumbs and sprinkle with melted butter.
Bake in a hot oven at 400°F (200°C) 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.
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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Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Parmesan cheese + buttertop 9% of all pairsSmell alikemoderateCooked together4,163 recipes
Shared aroma: guaiacol (smoky, sweet).
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Tomato + parmesan cheesetop 9% of all pairsSmell alikemoderateCooked together2,490 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Onion + parmesan cheesetop 15% of all pairsSmell alikemoderateCooked together3,717 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
Swap the onion
How well each one fits the dish's main ingredients (tomato, parmesan cheese, butter):
- Potatofits better
- Capsicumfits better
- Asparagusfits about as well
- Onionthe original
Fit is the average pairing score against tomato, parmesan cheese, butter. Candidates are from the same food group and used in at least 100 recipes.
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