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 ↓
Puff Paste
Ingredients
Directions
Prepare
Weigh and sift the pastry flour with salt, then set it in a cool place.
Scald a bowl and fill it with ice water.
Wash your hands in warm soapy water, then rinse in cold water.
Work the butter until it is waxy, divide it into four pieces, and pat each into a thin cake.
Wrap in a towel and chill until firm.
Set aside some flour for dusting.
Make the dough
On a platter, make a hole in the center of the remaining flour, add the egg white and one pat of butter.
Gradually add ice water and mix with your fingers to form a smooth, firm dough.
Knead lightly, then divide into two pieces and roll each to ¼ inch thick.
Distribute a second pat of butter over one piece of dough, cover with the other, and gently pat down.
Roll out the dough, dusting with flour if the butter breaks through.
If the dough is warm, wrap it in a cloth and chill until firm.
Fold and chill
Roll the dough into a long thin sheet, fold in thirds, turn it halfway, and roll out again.
Repeat the folding and rolling process until thoroughly chilled.
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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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + eggtop 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
- Pastry flour
- Provides the structure that holds the dough together and forms layers.
- Butter
- Forms separate fat layers that create flakiness as the dough is folded and rolled.
- Ice water
- Hydrates the flour to form a dough while keeping the butter firm and cold.
- Egg white
- Adds moisture and binds the dough together.
The step that matters
Keeping the butter cold and separate. If the butter softens or breaks through the dough, it blends into the flour instead of forming distinct layers, so the pastry loses its flakiness. Chilling between folds keeps the fat firm.
“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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