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 ↓
Tomatoes Witil Dumplings
Ingredients
Directions
Make the soup base
In a pot, combine the can of tomatoes, salt, cayenne pepper, bay leaf, and chopped onion.
Boil slowly for 1 to 2 hours.
Add dumplings and cook
In a bowl, mix flour, baking powder, salt, melted butter, egg, and milk to make the dumpling batter.
Drop spoonfuls of the dumpling batter into the boiling tomatoes.
Cover and cook for 10 minutes without removing the lid.
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.
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Tomato + oniontop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter barely smell alike, yet cooks put them together in 124,287 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
- Flour
- Forms the structure of the dumplings as it sets around the egg and milk.
- Baking powder
- Releases gas in the batter so the dumplings rise and turn light.
- Egg
- Binds the batter and helps the dumplings hold their shape while cooking.
- Butter
- Adds richness and tenderness to the dumpling batter.
- Tomatoes
- Provide the acidity, body and main flavor of the soup.
The step that matters
Cover and cook without removing the lid. Lifting the lid lets steam escape, which cools the surface of the soup and can leave dumplings dense or gummy. Keeping the lid on traps steam so the dumplings cook through and rise.
Swap the onion
How well each one fits the dish's main ingredients (tomato, pepper, flour, butter, egg, milk):
- Capsicumfits better
- Potatofits better
- Asparagusfits better
- Onionthe original
Fit is the average pairing score against tomato, pepper, flour, butter, egg, 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Tomato Soup526 recipes
Cream of Tomato Soup107 recipes
Tomato Bisque61 recipes
Cream Tomato Soup28 recipes