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 and Tomato Pie
Ingredients
Directions
The book says “a brisk oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Soak the tapioca overnight in cold water to allow it to swell.
Boil the butter beans with the onion until soft.
Assemble and bake
In a pie dish, layer the beans, tomatoes, and tapioca alternately.
Add small pieces of butter on each layer until the dish is full.
Make your preferred pie crust.
Cover the dish with the crust.
Bake in a 400°F (200°C) oven.
Serve with a little of the bean liquid as a sauce.
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 + oniontop 7% of all pairsSmell alikestrongCooked together5,242 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
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).
-
Beans + peppertop 11% of all pairsSmell alikemoderateCooked together4,733 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter beans
- Form the bulk of the filling and give it a soft, starchy body.
- Tapioca
- Swells when soaked and thickens the filling as it cooks.
- Butter
- Adds richness and moisture to the layers as it melts during baking.
- Tomatoes
- Add acidity and moisture to the filling.
- Onion
- Adds savoury aroma and sweetness as it softens in the cooking water.
The step that matters
Soak the tapioca overnight. Tapioca must swell fully before baking, because dry pearls would stay hard and fail to thicken the filling properly.
Swap the onion
How well each one fits the dish's main ingredients (butter, beans, tomato, pepper):
- Capsicumfits better
- Okrafits better
- Potatofits better
- Onionthe original
Fit is the average pairing score against butter, beans, tomato, 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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