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 ↓
Apple Pie
Ingredients
Directions
The book says “a hot oven”. The 400°F in the steps is the modern equivalent, not the book's own figure. The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Make the pastry
Sift flour, salt, and baking powder together.
Rub in the dripping or butter.
Mix with cold water until stiff.
Turn out on a floured board, pat into a flat cake, and roll out to ½ inch thick.
Spread lard over the surface, sprinkle with flour, fold, and roll into a long strip.
Roll like a jelly roll and cut off as needed for two crusts.
Divide dough, shape into rounds, and roll to fit the plate.
Assemble and bake
Fill a deep dish with quartered sour apples, add sugar and water.
Wet the edge of the dish, lay a strip of paste on it, cover with a larger piece, and press edges.
Bake in a hot oven (400°F / 200°C) for about 30 minutes or until the fruit is soft.
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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Butter + appletop 14% of all pairsSmell alikemoderateCooked together8,706 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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Apple + sugartop 18% of all pairsSmell alikelowCooked together16,478 recipes
Shared aroma: beta-damascenone (apple, rose).
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
- Pastry flour
- Forms the gluten structure that holds the crust together after rolling and baking.
- Baking powder
- Releases gas in the dough, lightening the crust so it bakes up tender rather than dense.
- Dripping or butter
- Rubbed into the flour, it coats flour particles and makes the crust short and flaky.
- Lard
- Spread and folded into the dough in layers, it separates strands of paste for a flakier crust.
- Sour apples
- Provide the fruit filling, and their tartness balances the sugar in the pie.
The step that matters
Rolling and folding the lard layers. Keeping the dough cool and not overworking it preserves the fat layers. Warm, overworked dough lets the fat blend into the flour, making the crust tough instead of flaky.
Swap the apple
How well each one fits the dish's main ingredients (flour, butter, sugar):
- Raisinfits better
- Vanillafits better
- Figfits better
- Applethe original
Fit is the average pairing score against flour, butter, sugar. 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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