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 ↓
Delicious Soup
Ingredients
Directions
Make the soup
Stew the peeled tomatoes with baking soda until thoroughly cooked.
Pour the boiling milk into the cooked tomatoes, stirring well.
Boil the mixture together for about 15 minutes.
Season with red pepper, coarse sea salt, and butter.
Finish and serve
Just before serving, thicken the soup with pounded crackers.
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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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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Pepper + buttertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Tomato + buttertop 22% of all pairsSmell alikemoderateCooked together6,918 recipes
Shared aroma: 3-hexenal (apple, fruity).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Peeled tomatoes
- Provide the main body and acidic tomato flavor of the soup.
- Baking soda
- Neutralizes tomato acidity so the milk is less likely to curdle.
- Whole milk
- Supplies creamy richness and makes the soup smooth and mellow.
- Pounded crackers
- Starch that thickens the soup as it is added near serving.
- Butter
- Adds fat for a rounder, richer mouthfeel and flavor.
The step that matters
Pour the boiling milk into the cooked tomatoes, stirring well.. Adding hot milk to acidic tomatoes can cause curdling. Stirring constantly while pouring helps disperse the milk so it blends smoothly rather than separating into clumps.
Swap the tomato
How well each one fits the dish's main ingredients (milk, pepper, butter):
- Potatofits better
- Capsicumfits better
- Tomatothe original
- Asparagusfits about as well
Fit is the average pairing score against 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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