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 ↓
Fried Onions
Ingredients
Directions
Prepare
Slice the onions thinly and season with salt and pepper.
Fry
Fry the bacon in a pan to render the fat, then remove the bacon.
Add the onions to the pan and stir until they are a nice brown color.
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
- Onions
- Their natural sugars caramelize and brown, giving the dish sweetness and deep color.
- Bacon fat
- Fat for frying that carries heat evenly and adds savory, smoky flavor to the onions.
The step that matters
Stirring the onions until brown. Onions brown through caramelization and Maillard reactions, which need dry, moderately hot pan surfaces and time. If the pan is crowded or the onions stay wet, they steam and turn pale and soft instead of browning.
“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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