Why it works: Onion and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Tripe and Onions
Ingredients
Directions
Prepare the tripe
Cut the tripe into pieces about 3 inches by 2 inches.
Trim off the fat from the tripe.
Wash the tripe well in cold water.
Dry the tripe on a clean cloth.
Rub the tripe with lemon juice to whiten it.
Blanch the tripe in boiling water for 5 to 10 minutes.
Simmer with milk and onions
In a stewpan, add 2 pints of milk and the tripe.
Simmer gently for 2 to 3 hours, stirring frequently to prevent sticking.
Boil the onions until done, then chop them.
Add the chopped onions to the tripe, season with salt, pepper, and sugar.
If desired, stir in flour to thicken the milk 15 minutes 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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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Onion + flourtop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + sugartop 18% of all pairsSmell alikelowCooked together77,875 recipes
Shared aroma: 2-nonenal (fatty, green).
Milk and flour barely smell alike, yet cooks put them together in 78,219 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
- Tripe
- Forms the main body of the dish, becoming tender during long, gentle simmering.
- Milk
- Forms the creamy cooking liquid that gives the stew its body and mild flavour.
- Onions
- Add sweetness and aroma as they soften and blend into the milk.
- Flour
- Thickens the milk into a smoother sauce when stirred in before serving.
The step that matters
Simmer gently with frequent stirring. Milk scorches and sticks easily on the bottom of the pan over a long simmer. Keeping the heat low and stirring often prevents burnt flavour and keeps the tripe tender.
Swap the onion
How well each one fits the dish's main ingredients (milk, pepper, sugar, flour):
- Capsicumfits better
- Arrowrootfits better
- Sweet potatofits better
- Onionthe original
Fit is the average pairing score against milk, pepper, sugar, flour. 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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