Why it works: Tomato and pepper match in chemistry and in kitchens. They rank in the top 4% of all ingredient pairs, and 17,913 recipes mention both. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
The recipe
Ingredients
Contains: milk (auto-detected from the ingredients and method; we can miss things, so check labels)
Also mentioned in the method: butter
Directions
Prepare
Chop finely 2 onions and green peppers.
Put the onions and peppers in a saucepan with butter and brown for 10 minutes.
Add 4 ounces fresh tripe (or calf brains) diced, 2 ounces raw rice, 2 quarts white broth or hot water, 1 pound fresh veal bones, 1 tablespoon salt and pepper.
Cover and simmer for 30 minutes.
Add the tomatoes and serve
Peel the tomatoes and cut them into eighths.
Add the tomatoes to the pot and let boil for 35 minutes longer.
Remove the bones and serve.
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. See the original page.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.
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Tomato + peppertop 4% of all pairsAroma overlapstrongMentioned together17,913 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Rice + tomatotop 3% of all pairsAroma overlapstrongMentioned together2,990 recipes
Shared aroma: trans,trans-2,4-nonadienal (fatty, green).
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Onion + tomatotop 4% of all pairsAroma overlapstrongMentioned together20,622 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Rice + oniontop 5% of all pairsAroma overlapstrongMentioned together9,990 recipes
Shared aroma: guaiacol (smoky, sweet).
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Rice + peppertop 6% of all pairsAroma overlapstrongMentioned together8,100 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
- Tripe
- Provides the main body of the soup as it becomes tender during simmering.
- Raw rice
- Thickens the broth as its starch releases during simmering.
- Veal bones
- Release gelatin and flavor into the broth during a long simmer.
- Onions
- Browning in butter builds sweet, savory depth into the base.
- Tomatoes
- Add acidity and a fresh, tangy note to the broth.
The step that matters
Browning the onions and peppers in butter. Browning caramelizes the sugars and proteins in the onions and peppers, creating deeper flavor. Stopping too early leaves the base pale and raw-tasting, while over-browning makes it bitter.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (rice, veal, tomato, pepper):
- Capsicumbetter flavor fit
- Carrotbetter flavor fit
- Potatobetter flavor fit
- Onionthe original
Fit is the average pairing score against rice, veal, tomato, pepper. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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