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 ↓
Puff Paste
Ingredients
Directions
Make the dough
Sift the flour into a bowl and make a well in the center.
Add the egg yolk and cold water to the well, then mix until the paste is the same consistency as butter.
Add lemon juice and more water if necessary to lighten the pastry.
Knead the mixture on a cool marble slab until smooth.
Laminate and fold
Roll out the dough and place the butter in the center.
Fold the dough over the butter, pressing the edges to seal.
Roll out the dough lengthwise, fold it into thirds, and repeat this process three times.
Chill the dough for 20 minutes, then roll and fold it again three times, chilling for another 15 minutes before the final roll.
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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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Flour + lemontop 17% of all pairsSmell alikemoderateCooked together30,404 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).
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
- Butter
- Forms separate layers within the dough that puff apart when baked, giving flakiness.
- All-purpose flour
- Provides the structure that holds the dough together and forms the layers.
- Egg yolk
- Adds richness and helps bind the dough into a smooth paste.
- Lemon juice
- Acidity that helps tenderize the gluten, keeping the pastry light.
The step that matters
Keeping the butter cold while folding. If the butter softens and blends into the dough, it will not form distinct layers, so the pastry will not puff. Chilling between folds keeps the butter firm.
Swap the lemon
How well each one fits the dish's main ingredients (butter, flour, egg):
- Raisinfits better
- Vanillafits better
- Lemonthe original
- Coconutfits about as well
Fit is the average pairing score against butter, flour, egg. 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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