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 ↓
Stewed Peas with Onions
Ingredients
Directions
Brown the onions
Heat the butter in a frying pan until hot.
Add the sliced onions and brown them, stirring often.
Add the peas and finish
Once the onions are browned, add the peas and enough water to cover.
Season with coarse sea salt and black pepper, then thicken slightly.
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).
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Onion + peastop 13% of all pairsSmell alikemoderateCooked together5,460 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Peas + peppertop 15% of all pairsSmell alikemoderateCooked together5,331 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + peastop 16% of all pairsSmell alikemoderateCooked together4,887 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Onions
- Browning develops sweet, savoury depth that flavours the whole dish.
- Butter
- Melts to conduct heat and carry flavour, helping the onions brown evenly.
- Peas
- Form the body of the dish, softening as they cook in the water.
The step that matters
Brown the onions. The onions need to brown, not steam or burn. Browning through the Maillard reaction and caramelization builds sweet, savoury flavour that the peas and water will carry through the whole dish.
Swap the peas
How well each one fits the dish's main ingredients (butter, onion, pepper):
- Black-eyed peafits better
- Sesamefits better
- Beansfits better
- Peasthe original
Fit is the average pairing score against butter, onion, 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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