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 ↓
IVkite Roux
Ingredients
Directions
Melt the butter slowly in a saucepan over low heat.
Stir in the sifted flour until it forms a thick, smooth paste.
Cook the mixture over low heat for 15 minutes without letting it brown.
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).
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
- Butter
- Carries the flour and adds richness and fat for a smooth, silky texture.
- Flour
- Starch that thickens the fat into a paste and later sauces when cooked.
The step that matters
Cook over low heat without browning. Gentle heat lets the flour cook out its raw, starchy taste and thicken well. Browning changes the flavour and colour and weakens the thickening power of the roux.
“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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