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 ↓
Cream of Tomato Soup
Ingredients
Directions
Make the tomato base
Cook the tomatoes, onion, garlic, bay leaf, salt, paprika, and sugar for 10 minutes.
Mix the cornstarch with the fat and stir into the boiling tomato mixture.
Boil for 3 minutes and then strain the mixture.
Allow the strained mixture to cool completely.
Finish and serve
When ready to serve, combine with the cold milk.
Heat in a double boiler and serve.
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.
Photo for illustrative purposes only · Contact us to use it
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.
-
Onion + garlictop 1% of all pairsAroma overlapstrongMentioned together29,058 recipes
Shared aroma: furaneol (caramel, strawberry).
-
Tomato + garlictop 3% of all pairsAroma overlapmoderateMentioned together14,076 recipes
Shared aroma: furaneol (caramel, strawberry).
-
Butter + milktop 7% of all pairsAroma overlapmoderateMentioned together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Tomato + oniontop 8% of all pairsAroma overlapmoderateMentioned together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Clove + garlictop 10% of all pairsAroma overlapmoderateMentioned together11,368 recipes
Shared aroma: linalool (floral, citrus).
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 and tomato flavour of the soup.
- Cornstarch
- Thickens the soup as it boils, giving it a smooth, creamy body.
- Butter
- Adds richness and helps the cornstarch blend smoothly into the hot tomato mixture.
- Milk
- Makes the soup creamy and mellows the tomato's acidity.
The step that matters
Stirring cornstarch into the boiling tomato mixture. Cornstarch clumps if added without being mixed with fat first or if it is dumped in. Mixing it with the fat and stirring it in while the mixture boils lets the starch disperse and thicken evenly into a smooth soup.
Flavor stand-ins for the clove
How well each one fits the dish's main ingredients (tomato, onion, garlic, sugar, butter, milk):
- Cinnamonbetter flavor fit
- Thymebetter flavor fit
- Cuminbetter flavor fit
- Clovethe original
Fit is the average pairing score against tomato, onion, garlic, sugar, butter, milk. 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.
You might also like
The Sunday pairing: one pairing, the chemistry behind it, and how to cook it. No spam, unsubscribe anytime.
Prefer an account? Create a free account for sign-in; Pro adds the full results and chemistry.

Tomato Soup526 recipes
Tomato Bisque61 recipes
Cream Tomato Soup28 recipes
Tomato Fritters23 recipes