Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Stewed Tripe and Onions
Ingredients
Directions
Prepare
Cut the tripe into pieces.
Peel the onions and slice them into rings.
Make the sauce
In a pan, melt the butter over medium heat.
Stir in the flour and cook without browning.
Add the milk or water and stir until boiling.
Simmer and serve
Add the tripe, sliced onions, and season with salt and pepper.
Allow to simmer for 20 minutes and serve 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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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 stew and becomes tender during simmering.
- Onions
- Add sweetness and aroma as they soften in the liquid.
- Butter
- Carries fat and flavor and starts the roux base.
- Flour
- Thickens the liquid into a smooth, body-rich sauce with butter.
- Milk
- Forms the creamy liquid that gives the stew its richness and body.
The step that matters
Cook the flour without browning. Flour cooked in butter must be stirred gently just until it loses its raw taste. Browning changes its color and flavor and weakens its thickening power, while stopping early leaves a pasty taste. Adding the liquid while the roux is still smooth prevents lumps.
Swap the onion
How well each one fits the dish's main ingredients (butter, flour, milk, pepper):
- Potatofits better
- Capsicumfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against butter, flour, milk, 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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