Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and 27,047 recipes mention both. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Tomato Sauce
Ingredients
Directions
Prepare the sauce
Slice the tomatoes.
Stew the tomatoes with the chopped onion and carrot.
Add the beef extract and allow it to dissolve.
Rub the mixture through a sieve.
Finish and serve
Season with salt and pepper, then add lemon juice.
Heat thoroughly and serve very hot.
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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Pepper + lemontop 3% of all pairsAroma overlapstrongMentioned together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Pepper + carrottop 6% of all pairsAroma overlapstrongMentioned together14,555 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Tomato + carrottop 6% of all pairsAroma overlapstrongMentioned together3,606 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + carrottop 6% of all pairsAroma overlapmoderateMentioned together21,601 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + beeftop 7% of all pairsAroma overlapmoderateMentioned together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Tomatoes
- Provide the main body, acidity and fresh flavour of the sauce.
- Onion
- Adds savoury sweetness and aroma as it softens during stewing.
- Carrot
- Adds natural sweetness and body to the stewed base.
- Beef extract
- Adds concentrated savoury, meaty depth to the sauce.
- Stock
- Thins the sauce and carries the flavours of the other ingredients.
- Lemon juice
- Adds brightness and acidity that balances the sweetness of the vegetables.
The step that matters
Rub the mixture through a sieve. Pressing the cooked solids through a sieve breaks them down and removes fibrous bits, giving a smooth, even texture. Skipping or rushing this leaves the sauce coarse and grainy.
Flavor stand-ins for the lemon
How well each one fits the dish's main ingredients (tomato, onion, pepper, carrot, beef):
- Avocadobetter flavor fit
- Limebetter flavor fit
- Cherrybetter flavor fit
- Lemonthe original
Fit is the average pairing score against tomato, onion, pepper, carrot, beef. 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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