Why it works: Milk and butter 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 the tripe and onions
Place the tripe in a saucepan and cover it with cold water.
Bring to a boil to blanch the tripe.
Remove the tripe.
Cut it into pieces.
Peel and chop the onions into small pieces.
Stew
Add the tripe, onions, and milk to a saucepan.
Bring to a boil.
Reduce heat and simmer for 1 hour.
Remove the tripe.
Arrange it on a hot dish to keep warm.
Make the sauce and serve
Mix the flour, salt, and pepper with a little cold milk to form a thin paste.
Stir this mixture and the butter into the milk and onions.
Let it boil slowly for 5 minutes.
Pour the sauce over the tripe.
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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
Flour and butter 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 dish, becoming tender during the long simmer.
- Onions
- Soften during simmering and add sweetness that mellows into the milk.
- Milk
- Forms the liquid base that gently cooks the tripe and onions and becomes the sauce.
- Flour
- Thickens the milky liquid into a smooth sauce when cooked.
- Butter
- Adds richness and a smooth, silky texture to the finished sauce.
The step that matters
Thickening the sauce with the flour paste. Flour must be mixed smooth with cold milk before adding, or it forms lumps when it meets hot liquid. Letting the sauce boil gently for the full time cooks out the raw flour taste and sets the thickness.
Swap the onion
How well each one fits the dish's main ingredients (milk, flour, pepper, butter):
- Potatofits better
- Capsicumfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against milk, flour, pepper, butter. 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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