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
Keep all materials and utensils cold.
Wash the butter in cold water and knead it with a spoon until it becomes waxy.
Shape the butter into an oblong sheet about 1 inch thick and set it in a pan of ice water.
Mix the salt and flour together.
Rub one-third of the butter into the flour.
Moisten the mixture with the egg white and ice water, mixing with a knife.
Stir vigorously and lightly dredge a board with flour.
Roll and fold
Turn out the paste onto the floured board and sprinkle lightly with flour.
Roll the paste backward and forward, turning it halfway around and rolling from you.
When the paste is about ¼ inch thick, wipe the remaining butter and lay it on the paste.
Sprinkle lightly with flour, then fold the paste from each side until the edges meet, and fold from the ends.
Pound lightly and roll back and forth two or three times.
Double the paste and roll it down to ½ inch thick, then fold in thirds and turn halfway around.
Roll down again and repeat this process six times.
If the paste sticks, place it on ice; it will roll more easily when chilled.
Use as little flour as possible.
Rest
Place the paste on ice to harden for 1 to 2 hours before using.
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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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
- Butter
- Forms flaky layers of fat that separate sheets of dough, creating lift when baked.
- Flour
- Provides the structure that holds the layered paste together as it is rolled.
- Ice water
- Keeps the butter cold and limits gluten development so the dough stays tender.
- Egg white
- Binds the flour and water into a cohesive paste.
The step that matters
Keeping the butter and dough cold while rolling. If the butter warms and softens, it merges into the dough instead of staying in separate layers, so the pastry loses its flakiness. Chilling between turns 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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