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 ↓
Butter Sauce or Plain Melted Butter
Ingredients
Directions
Make the roux
Melt 2 ounces of butter in a saucepan.
Add 1.5 ounces of flour and stir with a wooden spoon until smooth.
Add liquid and finish
Gradually add ⅔ pint of cold water, stirring continuously.
Cook over heat until the sauce thickens.
Add salt to taste. Optionally, stir in an additional ounce of butter for extra flavor.
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 flavor and adds richness, and its fat coats the flour so the paste blends smoothly.
- Flour
- Starch thickens the liquid as it heats, giving the sauce its body.
The step that matters
Adding the water gradually. Flour starch must be dispersed evenly in the fat before liquid is added. Adding the cold water slowly while stirring prevents lumps, because starch granules clump when they meet liquid in concentrated form.
“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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