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 the dough
Place flour on a board or marble slab and make a well in the center.
Squeeze in the lemon juice and add the beaten egg yolk mixed with a little ice water.
Stir with one hand while adding ice water with the other until the paste is as hard as the butter.
Roll the paste out into a smooth square about 1 inch thick.
Laminate
Spread the butter over half of the paste and fold the other half over it.
Chill for 15 minutes, then roll out into a long strip, keeping the edges smooth.
Fold one-third of the strip over the middle third, then roll it down.
Fold the outside third over and roll out again into a long strip.
Repeat the folding and rolling process six times, allowing 15 minutes to cool between each.
Handle the paste as little as possible throughout the process.
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 + 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).
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
- Flour
- Provides the structure that holds the layers of dough and butter together.
- Butter
- Forms separate layers that create flakiness as the dough is folded and baked.
- Egg yolk
- Adds richness and helps bind the dough into a smooth, pliable paste.
- Lemon juice
- Adds a little acidity that helps keep the dough tender and workable.
The step that matters
Keeping the butter and dough cold between folds. If the butter softens or melts into the paste, the layers blend together instead of staying distinct, so the pastry loses its flakiness. Chilling for 15 minutes between rolls keeps the butter firm, and handling the paste as little as possible limits warming from the hands.
Swap the lemon
How well each one fits the dish's main ingredients (flour, butter, egg):
- Raisinfits better
- Vanillafits better
- Lemonthe original
- Coconutfits about as well
Fit is the average pairing score against flour, butter, 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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