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 ↓
Beans and Tomatoes
Ingredients
Directions
Prepare
Strain the cooked beans.
Make the sauce
In a saucepan, combine the water, flour, and butter to thicken the liquid.
Add the tomato sauce and bring to a boil.
Finish and serve
Stir in the beans 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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Beans + tomatotop 1% of all pairsSmell alikestrongCooked together2,713 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Beans + flourtop 11% of all pairsSmell alikemoderateCooked together2,080 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + saucetop 15% of all pairsSmell alikelowCooked together15,338 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Tomato + saucetop 15% of all pairsSmell alikelowCooked together5,469 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Flour and butter 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
- Haricot beans
- Form the body of the dish, providing substance and a soft, tender texture.
- Flour
- Thickens the cooking liquid as its starch swells with heat, giving the sauce body.
- Butter
- Adds fat for richness and a smoother, silkier mouthfeel in the sauce.
- Tomato sauce
- Adds acidity and savory flavor, and colors the sauce.
The step that matters
Combining the water, flour, and butter. Flour must be stirred into the warm liquid and heated so its starch swells and thickens evenly. Adding it unevenly or without stirring can leave lumps and a thin or pasty sauce.
Swap the tomato
How well each one fits the dish's main ingredients (beans, flour, butter, sauce):
- Shallotfits better
- Welsh onionfits better
- Chivefits better
- Tomatothe original
Fit is the average pairing score against beans, flour, butter, 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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