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 ↓
Composition of the Liver of the Ox
Ingredients
Directions
Prepare
Partially boil the tripe and onions in separate pots.
Cook the soup
Combine both in a pot and add enough water to cover.
Slowly boil until the tripe is very soft and tender.
Season with salt and a pinch of cayenne pepper.
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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Tripe
- Becomes tender through long simmering, forming the main body of the soup.
- Onions
- Soften and release sweetness, adding aromatic flavor to the broth.
The step that matters
Slowly boil until the tripe is very soft and tender. Tripe is a tough connective-tissue muscle wall. A slow, gentle simmer breaks down collagen over time, while a rapid boil can toughen the meat and leave it chewy.
“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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