Why it works: Rice and tomato match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 3,065 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Tomato and Rice Soup
Ingredients
Directions
Make the broth
Combine the beef, soup bone, cold water, salt, and sliced onion in a large pot.
Cook for 5.5 to 6 hours.
Strain the soup through a colander.
Return the meat to the pot, discarding bones, skin, and gristle.
Finish the soup
Prepare the tomatoes and rice as needed.
Add the tomatoes to the soup after straining.
Add the rice 30 minutes before serving.
Stir frequently to ensure the tomatoes dissolve and the rice does not stick to the bottom.
Season lightly with pepper before serving.
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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Rice + tomatotop 6% of all pairsSmell alikestrongCooked together3,065 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Beef + oniontop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Beef + tomatotop 8% of all pairsSmell alikemoderateCooked together5,448 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 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
- Fresh lean beef
- Provides the main meat flavor and becomes tender during the long simmer.
- Soup bone
- Adds body and rich savoury flavour to the broth as it simmers.
- Tomatoes
- Add acidity, sweetness and body as they break down into the soup.
- Rice
- Thickens the soup slightly and adds starchy body as it cooks.
The step that matters
Adding the rice 30 minutes before serving. Rice keeps absorbing liquid and releasing starch, so adding it too early can make the soup mushy and cloudy. Stirring frequently helps keep it from sticking and scorching on the bottom of the pot.
Swap the onion
How well each one fits the dish's main ingredients (beef, rice, tomato, pepper):
- Capsicumfits better
- Potatofits better
- Carrotfits better
- Onionthe original
Fit is the average pairing score against beef, rice, 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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