Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Soups
Ingredients
Directions
Make the broth
Combine bones and meat in a pot with water.
Bring to a boil, skim off foam, then reduce heat to simmer for 5 hours.
Add pepper and salt, then strain into a jar to cool.
Serve
For serving, add cooked vegetables, tapioca, or rice to the broth.
Fry onions in butter until brown before adding to the soup.
Place a yolk, poached egg, lemon slice, or crouton in each bowl and pour soup over.
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 + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Pepper + ricetop 12% of all pairsSmell alikemoderateCooked together8,379 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Rice + lemontop 12% of all pairsSmell alikemoderateCooked together4,366 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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Meat + ricetop 13% of all pairsSmell alikemoderateCooked together1,481 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Rice + buttertop 16% of all pairsSmell alikemoderateCooked together9,645 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
- Bones
- Release gelatin and flavour into the water during the long simmer, giving the broth body.
- Lean fresh meat
- Adds savoury meaty flavour to the broth as it simmers.
- Butter
- Fat used for frying onions, adding richness and browning.
The step that matters
Skim off the foam after boiling. Foam carries impurities and proteins that can cloud and taint the broth. Removing it early keeps the finished soup clear and clean-tasting.
Swap the lemon
How well each one fits the dish's main ingredients (meat, pepper, rice, butter, egg):
- Lemonthe original
- Coconutfits about as well
- Avocadofits less well
- Mangofits less well
Fit is the average pairing score against meat, pepper, rice, butter, egg. 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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