Why it works: Bread and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓
Bread Sauce
Ingredients
Directions
Make the infusion
Cut the onion into quarters.
Boil the onion with black pepper and milk until the onion is soft.
Strain the milk over the grated bread.
Cover the mixture.
Thicken and serve
After an hour, transfer the mixture to a saucepan.
Add butter mixed with flour and boil together.
Serve hot.
Add cream if desired.
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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Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Milk + breadtop 11% of all pairsSmell alikemoderateCooked together11,466 recipes
Shared aroma: 2-undecenal (sweet).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Stale white bread
- Soaks up the seasoned milk and swells, giving the sauce its body.
- Milk
- Forms the liquid base that the bread absorbs and cooks into a smooth sauce.
- Butter
- Adds richness and fat, carrying flavour and smoothing the texture.
- Flour
- Mixed with butter to thicken the sauce as it boils.
- Onion
- Infuses the milk with savoury flavour during the initial boil.
The step that matters
Boiling the butter and flour together. Flour thickens only when heated in liquid long enough for starch granules to swell. Boiling the mixture together ensures it thickens fully and loses any raw floury taste.
Swap the onion
How well each one fits the dish's main ingredients (pepper, milk, bread, butter, flour, cream):
- Potatofits better
- Leekfits better
- Capsicumfits better
- Onionthe original
Fit is the average pairing score against pepper, milk, bread, butter, flour, cream. 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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