Why it works: Flour and butter 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 ↓
Vinegar Pie
Ingredients
Directions
Make the filling
Boil the sugar and vinegar together for a few minutes.
Cool the mixture, then add the beaten egg, flour, and butter.
Bake
Pour the filling into the prepared pie crusts.
Bake until set.
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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Flour + buttertop 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).
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Sugar + vinegartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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
- Sugar
- Sweetens the filling and, once dissolved, helps give the set custard its body.
- Vinegar
- Provides the sharp acidity that defines the pie's tangy flavour.
- Egg
- Sets during baking to bind the filling into a firm, sliceable custard.
- Flour
- Thickens the filling so it holds its shape rather than running when cut.
- Butter
- Adds fat for a richer mouthfeel and a smoother, more tender set.
The step that matters
Cool the mixture before adding the egg. Adding beaten egg to a very hot syrup can scramble it into specks instead of blending smoothly. Cooling first lets the egg incorporate evenly so the filling sets into a uniform custard.
“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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