Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Tomato Pie
Ingredients
Directions
The book gives no oven temperature. The 300°F (150°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Remove the skins from the tomatoes and slice them thin.
Place the sliced tomatoes in the pie crust.
Add sugar, vinegar, butter, and flour to the tomatoes.
Put strips of pie crust across the top.
Bake
Bake in a slow oven at 300°F (150°C) until thoroughly done.
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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
-
Sugar + vinegartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Tomato + vinegartop 16% of all pairsSmell alikemoderateCooked together5,063 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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
- Yellow tomatoes
- Provide the main filling, releasing juice that becomes the sauce as they cook.
- Sugar
- Adds sweetness and helps balance the tomatoes' acidity.
- Vinegar
- Adds acidity that sharpens the flavor of the tomatoes.
- Butter
- Adds fat and richness to the filling.
- Flour
- Thickens the juices from the tomatoes as the pie bakes.
The step that matters
Bake until thoroughly done. Tomatoes release a lot of liquid as they cook. Baking long enough at a low temperature lets the flour thicken those juices and cooks the crust through, so the filling is not runny.
Swap the tomato
How well each one fits the dish's main ingredients (sugar, vinegar, butter, flour):
- Shallotfits better
- Mustardfits better
- Arrowrootfits better
- Tomatothe original
Fit is the average pairing score against sugar, vinegar, butter, flour. 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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