Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Blanche Sauce
Ingredients
Directions
In a saucepan, cook flour and butter together without browning.
Moisten with milk and white stock.
Add onion, clove, peppercorns, and bay leaf.
Stir until it boils.
Let it simmer for 15 minutes.
Strain the sauce and use as required.
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 + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Onion + clovetop 13% of all pairsSmell alikemoderateCooked together16,901 recipes
Shared aroma: 2-nonanone (fruity, floral).
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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
Flour and butter 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
- Flour
- Thickens the liquid into a smooth sauce when cooked with the butter.
- Butter
- Forms a roux with the flour and adds richness to the sauce.
- Milk
- Provides the liquid base and creamy body of the sauce.
The step that matters
Cook the flour and butter without browning. Cooking the roux gently cooks out the raw flour taste while keeping the sauce pale. Browning changes the flavour and colour, and stirring prevents lumps when the liquid is added.
Swap the clove
How well each one fits the dish's main ingredients (flour, butter, milk, onion):
- Cinnamonfits better
- Capersfits better
- Garlicfits better
- Clovethe original
Fit is the average pairing score against flour, butter, milk, onion. 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.
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