Why it works: Onion and carrot match in chemistry and in kitchens. They rank in the top 4% of all ingredient pairs, and 21,599 recipes mention both. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Mulligatawny Soup
Ingredients
Directions
Make the base
Melt the butter in a saucepan and fry the sliced apple, onion, and carrot until softened.
Sprinkle the curry powder and flour over the vegetables and brown them.
Pour in the boiling stock and stir until it comes to a boil.
Simmer and finish
Simmer gently for one hour, then strain through a sieve back into the saucepan.
Bring to a boil again, then season with salt and lemon juice.
Serve in a warm tureen with well-boiled rice on the side.
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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Onion + carrottop 4% of all pairsAroma overlapstrongMentioned together21,599 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Carrot + ricetop 4% of all pairsAroma overlapstrongMentioned together2,351 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Carrot + lemontop 5% of all pairsAroma overlapstrongMentioned together3,350 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Onion + ricetop 5% of all pairsAroma overlapstrongMentioned together9,990 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Apple + buttertop 6% of all pairsAroma overlapstrongMentioned together8,692 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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 that carries the flavour and body of the soup.
- Curry powder
- Supplies the spice and aroma that define the soup, bloomed in fat to deepen it.
- Flour
- Browns with the curry powder and thickens the soup slightly.
- Butter
- Fat that softens the vegetables and carries the spices' aroma.
- Apple
- Adds gentle sweetness that balances the sharpness of the curry spices.
- Onion
- Softens into the base, adding savoury depth and body.
The step that matters
Browning the curry powder and flour. Frying spices and flour in fat toasts them and removes raw, dusty flavour. If they burn, the soup turns bitter, so stir constantly over moderate heat.
Flavor stand-ins for the lemon
How well each one fits the dish's main ingredients (apple, onion, carrot, flour, butter, rice):
- Grapebetter flavor fit
- Coconutbetter flavor fit
- Mangobetter flavor fit
- Lemonthe original
Fit is the average pairing score against apple, onion, carrot, flour, butter, rice. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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