Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Sirloin Roast
Ingredients
Directions
Place the bones in a stewpan with 1 quart of cold water.
Cook for 2 hours, then strain the water into another stewpan.
Cook the soup for 3 hours.
In a small frying pan, heat 2 tablespoons of butter.
Stir in 2 tablespoons of flour until smooth and frothy.
Add the mixture to the soup and stir in 1 tablespoon of chopped parsley.
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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + parsleytop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + parsleytop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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
Swap the parsley
How well each one fits the dish's main ingredients (butter, flour):
- Jalapenofits better
- Capersfits better
- Nutmegfits better
- Parsleythe original
Fit is the average pairing score against butter, flour. Candidates are from the same food group and used in at least 100 recipes.
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