Why it works: Onion and garlic match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and 29,058 recipes mention both. Both carry furaneol, which smells caramel, strawberry. The science ↓
Tomato Sauce
Ingredients
Directions
In a stew pan, heat the quart of tomatoes with the onion, garlic, pepper, and salt for about 20 minutes.
Remove from heat and strain the mixture through a sieve.
In another pan, melt the butter, then sprinkle in the flour and stir until it browns and froths slightly.
Mix the strained tomato pulp with the butter and flour mixture until well combined.
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 + garlictop 1% of all pairsAroma overlapstrongMentioned together29,058 recipes
Shared aroma: furaneol (caramel, strawberry).
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Tomato + garlictop 3% of all pairsAroma overlapmoderateMentioned together14,076 recipes
Shared aroma: furaneol (caramel, strawberry).
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Clove + peppertop 5% of all pairsAroma overlapstrongMentioned together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
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Tomato + peppertop 7% of all pairsAroma overlapmoderateMentioned together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Garlic + peppertop 8% of all pairsAroma overlapmoderateMentioned together27,090 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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 flavour of the sauce.
- Flour
- Thickens the sauce when cooked with butter and combined with the tomato pulp.
- Butter
- Adds richness and carries the flour so it can be cooked into a roux.
The step that matters
Browning the butter and flour. Stirring the flour in melted butter until it browns and froths cooks out its raw starch taste and builds a nutty flavour. Stopping too early leaves a floury taste, while going too far can scorch the roux and make the sauce bitter.
Flavor stand-ins for the clove
How well each one fits the dish's main ingredients (tomato, onion, garlic, pepper, butter, flour):
- Thymebetter flavor fit
- Cuminbetter flavor fit
- Parsleybetter flavor fit
- Clovethe original
Fit is the average pairing score against tomato, onion, garlic, pepper, butter, flour. 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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