Why it works: Tomato and rice 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 ↓
Rice Spanish
Ingredients
Directions
Fry the onion and chopped dried pepper in the drippings.
Add the tomatoes, rice, and cold water.
Put the mixture in the oven and bake until solid.
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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Tomato + ricetop 6% of all pairsSmell alikestrongCooked together3,065 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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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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Onion + ricetop 9% of all pairsSmell alikemoderateCooked together10,433 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 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
- Drippings
- Fat that carries flavor and helps the onion and pepper brown as they fry.
- Onion
- Frying softens it and builds a sweet, savory aroma as the base of the dish.
- Dried pepper
- Adds concentrated, earthy flavor to the fried base.
- Tomatoes
- Provide moisture and acidity that season the dish and help cook the rice.
- Rice
- Absorbs the surrounding liquid as it cooks, giving the dish its body and texture.
The step that matters
Bake until solid. Rice absorbs liquid and its starch sets as it bakes. Stopping too early leaves the mixture wet, while baking too long can dry it out and make it tough.
Swap the onion
How well each one fits the dish's main ingredients (pepper, tomato, rice):
- Capsicumfits better
- Okrafits better
- Carrotfits better
- Onionthe original
Fit is the average pairing score against pepper, tomato, rice. 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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