Why it works: Onion and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Mullagatawny Soup
Ingredients
Directions
Make the stock
Add bacon and knuckle of veal to a stew-pan and simmer for about 1 hour and 45 minutes.
Add the breast of veal pieces, bones, and gristly parts to the knuckle.
Fry and combine
Fry the veal pieces and sliced onions in clarified dripping or butter in another stew-pan.
Strain the stock from the knuckle and add the fried meat and onions.
Skim the surface and let it simmer for nearly 1 hour.
Finish the soup
Mix curry powder, browned flour, salt, and cayenne pepper in a batter.
Add the batter to the soup.
Simmer until the meat is tender.
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 + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Veal + oniontop 17% of all pairsSmell alikelowCooked together6,841 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Onion + flourtop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they 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
- Veal knuckle
- Releases flavour and body into the stock during the long simmer.
- Lightly browned flour
- Thickens the soup and adds a toasty, nutty depth to the broth.
- Curry powder
- Supplies the spiced aroma and warm flavour that define the soup.
- Sliced onions
- Add sweetness and savoury depth as they soften and brown in the fat.
- Breast of veal
- Provides tender meat pieces that become soft during the final simmer.
The step that matters
Add the batter to the soup. Flour mixed with curry powder must be smoothly blended into the batter before it goes in, otherwise it clumps. Simmering after the addition lets the flour thicken the liquid and cook out its raw taste.
Swap the onion
How well each one fits the dish's main ingredients (veal, butter, flour, pepper):
- Shallotfits better
- Leekfits better
- Capsicumfits better
- Onionthe original
Fit is the average pairing score against veal, butter, flour, pepper. 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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