Why it works: Sauce and cream are a kitchen classic. They rank in the top 9% of all ingredient pairs, and 4,787 recipes mention both. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Onion Sauce, No. 2
Ingredients
Directions
Cook the onions
Boil the onions in water for 5 minutes.
Slice the onions and cook them in the béchamel sauce with the herbs for about 30 minutes.
Finish the sauce
Remove the herbs and rub the sauce through a fine sieve.
Add the cream and reheat before serving.
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 aroma chemistry they share, and how many recipes mention both.
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Sauce + creamtop 9% of all pairsAroma overlapmoderateMentioned together4,787 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Onion + creamtop 18% of all pairsAroma overlaplowMentioned together10,827 recipes
Shared aroma: 2-nonanone (fruity, floral).
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Onion + saucetop 19% of all pairsAroma overlaplowMentioned together10,474 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Onion and cream share little aroma chemistry, yet 10,827 recipes mention both: they likely 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
- Onions
- Provide the main sweet, savoury flavour and body of the sauce as they soften.
- Béchamel sauce
- Forms the thick, creamy base that the onions cook into and the sauce is built on.
- Herbs
- Add aroma to the sauce while it cooks, then are removed before serving.
- Cream
- Adds richness and a silky, smooth texture to the finished sauce.
The step that matters
Reheating after adding the cream. Cream can separate or turn grainy if it boils hard. Reheating gently after it goes in keeps the sauce smooth and glossy.
“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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