Why it works: Milk and butter 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 ↓
Tomato Bisque
Ingredients
Directions
Make the tomato base
Cook the tomatoes until soft, then strain them through a fine sieve.
In a saucepan, combine the sugar, salt, and white pepper, then add the strained tomatoes.
Heat the mixture until hot, then add the baking soda.
Finish and serve
In a double boiler, heat the milk for ten minutes.
Add the butter to the tomatoes and pour the hot milk over the mixture.
Do not mix until the last minute to prevent curdling.
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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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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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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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Sugar + milktop 18% of all pairsSmell alikelowCooked together77,875 recipes
Shared aroma: 2-nonenal (fatty, green).
Sugar and milk barely smell alike, yet cooks put them together in 77,875 recipes: they work on texture and structure more than aroma.
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 soup.
- Milk
- Adds creaminess and softens the tomato's acidity.
- Baking soda
- Neutralises some acidity in the tomatoes, reducing the risk of curdling.
- Butter
- Adds richness and a smooth, silky mouthfeel.
- Sugar
- Balances the acidity of the tomatoes with sweetness.
The step that matters
Do not mix until the last minute. Adding acidic tomatoes to hot milk can cause the proteins to clump and curdle. Combining them only at the end, with the mixture hot but not boiling, keeps the bisque smooth.
Swap the white pepper
How well each one fits the dish's main ingredients (tomato, sugar, milk, pepper, butter):
- Cinnamonfits better
- Cardamomfits better
- Thymefits better
- White pepperthe original
Fit is the average pairing score against tomato, sugar, milk, pepper, butter. 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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