Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Young Onions
Ingredients
Directions
Prepare the onions
Cut off the stems and tops of the onions.
Skin the onions.
Cook the onions in plenty of boiling water for 15 minutes.
Make the cream
Melt the butter over low heat in another saucepan.
Add the onions and chopped parsley to the saucepan.
Warm slowly for 10 minutes.
Stir salt, pepper, and corn starch into the milk.
Add the milk to the saucepan.
Simmer for 3 minutes, stirring several times.
Pour out to serve.
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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Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Milk + corntop 10% of all pairsSmell alikemoderateCooked together6,955 recipes
Shared aroma: hexanal (green, grassy).
-
Pepper + corntop 11% of all pairsSmell alikemoderateCooked together5,324 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Young onions
- Provide the main body and sweet, mellow flavour of the cream.
- Butter
- Adds richness and carries flavour while the onions warm gently.
- Milk
- Forms the liquid base that becomes the creamy texture.
- Corn starch
- Thickens the milk as it simmers, giving the cream body.
The step that matters
Adding the corn starch to the milk. Corn starch clumps if it hits hot liquid unmixed. Stirring it fully into the cold milk first lets it disperse evenly, so it thickens smoothly when the milk is simmered.
Swap the onion
How well each one fits the dish's main ingredients (butter, milk, pepper, corn, parsley):
- Potatofits better
- Capsicumfits better
- Carrotfits better
- Onionthe original
Fit is the average pairing score against butter, milk, pepper, corn, parsley. 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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