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
Ingredients
Directions
Stir the butter with a fork until it becomes a light cream.
Add the powdered sugar and continue to beat for 1 to 2 minutes.
Just before serving, mix in your choice of flavoring.
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).
-
Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
-
Butter + brandytop 15% of all pairsSmell alikemoderateCooked together5,127 recipes
Shared aroma: ethyl octanoate (fruity, wine).
-
Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Sugar + brandytop 19% of all pairsSmell alikelowCooked together11,939 recipes
Shared aroma: beta-damascenone (apple, rose).
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
- Provides richness and a smooth, creamy body as it is creamed with the sugar.
- Powdered sugar
- Sweetens the sauce and, when beaten with butter, helps give it a light, smooth texture.
The step that matters
Add the flavoring just before serving. Flavorings such as brandy or wine are volatile and can fade when held, and adding them late keeps their aroma fresh. Adding them too early can also thin or change the texture of the creamed butter.
“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.
More butter sauce recipes
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