Why it works: Onion and garlic match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 29,058 recipes. Both carry furaneol, which smells caramel, strawberry. The science ↓
Tomato Sauce
Ingredients
Directions
Make the sauce base
Cook the canned tomatoes with sugar, onion, garlic, and parsley for 15 minutes.
Rub the mixture through a sieve.
Thicken and finish
Melt the butter in a pan and add the flour.
Stir the mixture into the tomatoes.
Add a few grains of baking soda.
Season with salt and pepper.
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 + garlictop 1% of all pairsSmell alikestrongCooked together29,058 recipes
Shared aroma: furaneol (caramel, strawberry).
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Tomato + garlictop 3% of all pairsSmell alikemoderateCooked together14,076 recipes
Shared aroma: furaneol (caramel, strawberry).
-
Garlic + parsleytop 4% of all pairsSmell alikestrongCooked together9,308 recipes
Shared aroma: beta-phellandrene (minty, terpene).
-
Clove + parsleytop 6% of all pairsSmell alikestrongCooked together6,768 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
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Tomato + oniontop 8% of all pairsSmell alikemoderateCooked together20,633 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
- Form the main body and flavour of the sauce.
- Butter
- Adds richness and fat to the sauce.
- Flour
- Thickens the sauce as it combines with the butter and tomatoes.
- Baking soda
- Neutralises some of the tomato's acidity, softening its sharpness.
The step that matters
Stirring the flour-butter mixture into the tomatoes. Flour clumps if added raw or unevenly. Cooking the butter and flour together first and stirring it in smoothly helps the sauce thicken evenly without lumps.
Swap the clove
How well each one fits the dish's main ingredients (tomato, sugar, onion, garlic, parsley, butter, flour):
- Capersfits better
- Thymefits better
- Cuminfits better
- Clovethe original
Fit is the average pairing score against tomato, sugar, onion, garlic, parsley, butter, flour. 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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