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 ↓
Brussels Sprouts
Ingredients
Directions
Prepare
Soak the Brussels sprouts in water for a short time and wash them clean.
Boil the sprouts in salted water until done.
Sauté
Strain the sprouts and fry them in butter.
Add browned flour and finely chopped onion to the butter.
Season with pepper and coarse sea salt to taste.
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.
Photo for illustrative purposes only · Contact us to use it
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).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Flour + oniontop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + peppertop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Brussels sprouts
- Form the main body of the dish and soften through boiling, then brown in butter.
- Butter
- Adds fat and richness, and browns the sprouts for savory flavor.
- Flour
- Browned in the butter, it adds a nutty flavor and slightly thickens the buttery juices.
- Onion
- Softens and turns sweet as it cooks, adding aroma to the butter.
The step that matters
Browning the flour. Flour needs to turn light golden in the butter before the onion goes in. Heating it too long or too hot scorches it, leaving a bitter taste and dark specks, while underbrowned flour tastes raw and pasty.
Swap the brussels sprouts
How well each one fits the dish's main ingredients (butter, flour, onion, pepper):
- Chivefits better
- Okrafits better
- Leekfits better
- Brussels sproutsthe original
Fit is the average pairing score against butter, flour, 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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