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 and onions
Place tripe in a saucepan with cold water and bring to a boil.
Discard the water after blanching the tripe.
Cut the blanched tripe into neat oblong pieces.
Peel and slice the onions.
Simmer and thicken
Combine the tripe and onions with 2 cups of milk in a saucepan and let it simmer for 2 hours.
Mix the flour with a little cold milk to form a paste. Stir the flour paste into the hot milk slowly, allowing it to boil and thicken.
Season the stew with salt and pepper to taste.
Serve the stew very hot.
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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Onion + flourtop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + peppertop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Onion + milktop 20% of all pairsSmell alikemoderateCooked together13,418 recipes
Shared aroma: hexanal (green, grassy).
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
- Provides the chewy, tender meat that forms the body of the stew.
- Onions
- Soften during simmering and add sweetness and aroma to the milk.
- Milk
- Forms the liquid base of the stew and gives it a mild, creamy richness.
- Flour
- Thickens the hot milk into a smoother, heavier sauce when mixed into a paste first.
The step that matters
Adding the flour paste to the hot milk. Flour mixed into a paste with cold milk and then stirred into hot liquid disperses evenly. Added dry or all at once, it clumps and leaves lumps that do not dissolve.
Swap the onion
How well each one fits the dish's main ingredients (milk, flour, pepper):
- Capsicumfits better
- Arrowrootfits better
- Potatofits better
- Onionthe original
Fit is the average pairing score against milk, flour, 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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