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 ↓
Drawn Butter Sauce
Ingredients
Directions
In a small saucepan, combine the flour and half of the butter, then stir over medium heat until thoroughly mixed.
Pour in the boiling water and continue stirring until the sauce boils and thickens.
Add the salt and white pepper.
Cut the remaining butter into bits and stir it into the sauce until melted.
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.
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + white peppertop 28% of all pairsSmell alikelowCooked together3,814 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Flour + white peppertop 32% of all pairsSmell alikelowCooked together2,228 recipes
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
- Adds richness and flavour, and melted butter gives the sauce a smooth, glossy finish.
- Flour
- Thickens the sauce as it cooks with the butter and boiling water.
The step that matters
Pour in the boiling water and keep stirring until the sauce boils and thickens. Flour needs heat and constant stirring to swell and gelatinise evenly. Stopping early or adding water too quickly can leave lumps or a thin, starchy sauce.
Swap the white pepper
How well each one fits the dish's main ingredients (butter, flour):
- Jalapenofits better
- Capersfits better
- Nutmegfits better
- White pepperthe original
Fit is the average pairing score against butter, flour. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.

Wine Sauce (for stewed fruit)186 recipes
Caper Sauce180 recipes
Brown Sauce141 recipes
Dutch Sauce74 recipes