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
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the dough
Sift the flour, salt, and sugar onto a marble slab.
Make a hole in the center and add the butter (the size of an egg) and the egg white.
If desired, wash the butter by working it with your hands under ice water until smooth and elastic, then chill on ice.
Work the flour, butter, and egg white together, adding a little ice water at a time until all the flour is used.
Knead the mixture for a few minutes, then roll it out very thin.
Laminate the dough
Place the remaining butter on one half, sprinkle with a little flour, fold over, and roll out.
Repeat the rolling and folding process eight times.
If the dough becomes soft, wrap it in a damp napkin and chill on ice until hard.
Rest and bake
Let the dough rest in the ice for several hours or overnight before baking.
When ready to bake, ensure the pastry is icy cold and preheat the oven to 400°F (200°C).
Place the pastry in a part of the oven with good heat underneath to allow it to rise before browning.
If it begins to brown too quickly, reduce the heat immediately.
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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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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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).
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Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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 that steam apart during baking, producing a flaky, rising texture.
- Flour
- Provides the structure that holds the layers together as the pastry rolls and bakes.
- Egg white
- Adds binding and structure to the dough, helping it hold together when rolled.
- Ice water
- Keeps the dough cold and hydrates the flour without fully developing gluten.
The step that matters
Keeping the pastry icy cold while laminating and before baking. Cold butter stays in solid pieces that create separate layers. If it softens and blends into the dough, it leaves no layers and the pastry bakes dense rather than flaky.
“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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