Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Cream Tomato Soup
Ingredients
Directions
Prepare the tomato base
Moisten the salt with cold water.
Add the sugar and butter to a pot.
Add the strained tomatoes and bring to a boil.
Stir in the baking soda.
Combine with milk
Pour the tomato mixture into the milk after both have boiled.
Do not return to the stove.
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 their aromas overlap, and how often cooks already put them together.
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Tomato + milktop 15% of all pairsSmell alikemoderateCooked together2,226 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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Egg + milktop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Strained tomatoes
- Form the soup's main body and provide its tangy, acidic base flavor.
- Milk
- Supplies the creamy body and mild sweetness that make the soup smooth.
- Butter
- Adds fat for richness and a smoother, rounder mouthfeel.
- Sugar
- Adds sweetness that balances the acidity of the tomatoes.
- Baking soda
- Neutralizes some of the tomato's acidity, helping reduce curdling of the milk.
The step that matters
Pouring the tomato mixture into the milk. Tomatoes are acidic, and heating acid with milk proteins can make them clump and curdle. Adding the tomato mixture to milk only after both have boiled, and not returning the soup to the stove, helps keep it smooth.
Swap the tomato
How well each one fits the dish's main ingredients (sugar, egg, butter, milk):
- Potatofits better
- Sweet potatofits better
- Asparagusfits better
- Tomatothe original
Fit is the average pairing score against sugar, egg, butter, milk. 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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