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 ↓
Spanish Onions and Kidneys
Ingredients
Directions
Prepare the onions
Cut the tops off the onions and place them, skins on, in a saucepan of boiling salted water.
Cook until the onions are tender.
Cook the kidney
Meanwhile, prepare the kidney by cleaning and cutting it into pieces.
In a separate pan, sauté the kidney pieces with salt and pepper until cooked through.
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
- Spanish onions
- Become tender and sweet when boiled, forming the soft vegetable base of the dish.
- Kidney
- Provides the main meat and savoury, rich flavour once sautéed.
The step that matters
Sautéing the kidney until cooked through. Kidney is tough and easily overcooked, which makes it rubbery and dry; cooking only until just cooked through keeps it tender.
“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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