Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Tripe Lyonnaise
Ingredients
Directions
Cook the tripe
In a frying pan, melt the butter over medium heat.
Add the chopped onion and fry until golden brown.
Stir in the tripe, parsley, vinegar, salt, and cayenne pepper, and cook while stirring to prevent burning.
Serve
Spread tomato sauce on a platter, add the tripe mixture, 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.
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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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Parsley + tomatotop 8% of all pairsSmell alikemoderateCooked together5,398 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
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 and carries its texture.
- Butter
- Adds fat for frying and a rich, savoury flavour.
- Onion
- Softens and browns in the butter, adding sweetness and depth.
- Vinegar
- Adds acidity that sharpens the flavour of the rich tripe.
The step that matters
Keep the tripe stirring while it cooks. Tripe and onion are rich in sugars and proteins that scorch quickly over direct heat. Constant stirring at medium heat keeps the pan from burning and lets the vinegar and seasonings blend evenly into the mixture.
Swap the onion
How well each one fits the dish's main ingredients (butter, parsley, vinegar, pepper, tomato, sauce):
- Capsicumfits better
- Shallotfits better
- Carrotfits better
- Onionthe original
Fit is the average pairing score against butter, parsley, vinegar, pepper, tomato, sauce. 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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