Why it works: Beans and tomato match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 2,713 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Haricot Beans, with Tomato Sauce
Ingredients
Directions
Prepare the beans
Soak the beans for 12 hours.
Put the beans in a saucepan and cover with water.
Cook
Add the onion, celery, turnip, butter, pepper, and salt.
Boil slowly until the beans are soft.
Remove the vegetables.
Drain the beans.
Serve
Pile the beans on a dish.
Pour thick tomato sauce over them.
Garnish with croutons.
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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Beans + tomatotop 1% of all pairsSmell alikestrongCooked together2,713 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Celery + turniptop 2% of all pairsSmell alikemoderateCooked together4,418 recipes
Shared aroma: coumarin (sweet, hay).
-
Beans + turniptop 3% of all pairsSmell alikestrongCooked together400 recipes
Shared aroma: coumarin (sweet, hay).
-
Celery + tomatotop 4% of all pairsSmell alikemoderateCooked together3,377 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Celery + peppertop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Haricot beans
- Provide the main body of the dish, softening into a tender, starchy base as they cook.
- Butter
- Adds richness and fat, giving the beans a smoother mouthfeel and rounded flavour.
- Thick tomato sauce
- Adds acidity and moisture, contrasting with the mild, creamy beans.
The step that matters
Boil slowly until the beans are soft. Gentle simmering lets the bean skins and interiors soften evenly. A hard, fast boil can break the skins while the centres stay firm, and beans added to acidic liquids before they are tender may stay hard, so the cook must check for softness rather than rely on time.
Swap the onion
How well each one fits the dish's main ingredients (beans, celery, turnip, butter, pepper, tomato, sauce):
- Carrotfits better
- Okrafits better
- Lettucefits better
- Onionthe original
Fit is the average pairing score against beans, celery, turnip, butter, pepper, tomato, sauce. 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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