Why it works: Onion and tomato are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 20,633 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Deviled Clams
Ingredients
Directions
Make the sauce
Fry the sliced onion in 1 tablespoon of butter until light brown.
Strain out the onion.
Return the hot butter to the fire, add the chopped tomatoes, salt, sugar, paprika, and nutmeg. Stir for 3 minutes.
Add 1 teaspoon of butter rolled in ½ teaspoon of flour to the mixture.
Assemble and bake
Mix in the chopped clams with the butter and tomatoes.
Fill buttered scallop shells or a buttered pudding dish with the mixture.
Sift fine-crushed crackers over the top. Add tiny dabs of butter.
Bake until delicately browned.
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.
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Nutmeg + flourtop 8% of all pairsSmell alikemoderateCooked together18,623 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + clamtop 11% of all pairsSmell alikemoderateCooked together840 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
Butter and flour 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
- Clams
- Provide the main protein and seafood flavor of the filling.
- Tomatoes
- Add moisture and acidity that give the filling its body and tang.
- Butter
- Adds richness and fat, and helps the crumbs and filling brown.
- Crackers
- Form a crisp, browned crust on top of the filling.
- Flour
- Thickens the butter and tomato mixture slightly as it cooks.
The step that matters
Stirring the butter and flour into the tomato mixture. Adding flour-thickened butter to hot liquid without stirring can leave lumps. Stirring keeps the flour dispersed so the filling thickens smoothly.
Swap the tomato
How well each one fits the dish's main ingredients (onion, butter, sugar, nutmeg, flour, clam):
- Potatofits better
- Shallotfits better
- Chivefits better
- Tomatothe original
Fit is the average pairing score against onion, butter, sugar, nutmeg, flour, clam. 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