Why it works: Onion and leek match in chemistry and in kitchens. They rank in the top 4% of all ingredient pairs, and cooks put them together in 1,326 recipes. Both carry ethyl butyrate, which smells apple, fruity. The science ↓
Rice Soup
Ingredients
Directions
Prepare
Wash the rice.
Bring the stock to a boil.
Make the soup
Sprinkle the rice into the stock.
Add the chopped onion, leek, and seasoning.
Simmer for one hour.
If desired, add a little heated milk at the end.
Serve
Place parsley in a tureen and pour the soup over it.
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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Onion + leektop 4% of all pairsSmell alikestrongCooked together1,326 recipes
Shared aroma: ethyl butyrate (apple, fruity).
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Parsley + leektop 4% of all pairsSmell alikestrongCooked together759 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Rice + leektop 7% of all pairsSmell alikestrongCooked together161 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
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Rice + milktop 7% of all pairsSmell alikemoderateCooked together7,374 recipes
Shared aroma: 2-nonenal (fatty, green).
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Parsley + oniontop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Stock
- Forms the liquid base and carries the flavour of the whole soup.
- Rice
- Releases starch during simmering, which thickens the soup and gives it body.
- Onion
- Softens during simmering, adding sweetness and a savoury aromatic base.
- Leek
- Softens during simmering, adding a mild sweetness and depth to the broth.
- Milk
- Adds richness and smooths the flavour when stirred in at the end.
The step that matters
Adding the heated milk. Milk can curdle and separate if it boils or is added to very hot soup too quickly. Warm it gently and stir it in near the end, off a hard boil, so the soup stays smooth.
Swap the parsley
How well each one fits the dish's main ingredients (rice, onion, leek, milk):
- Garlicfits better
- Celeryfits better
- Turmericfits better
- Parsleythe original
Fit is the average pairing score against rice, onion, leek, milk. 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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