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
The book says “a very hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the dough
Wash the butter and squeeze it in a cloth to dry.
Mix the flour with cold water, lemon juice, and egg yolk to form a stiff paste; knead for 10 minutes until smooth.
Flour a surface and a rolling pin, then roll out the paste to about ½ inch thick.
Press the butter to the size of the paste, place it in the middle, and fold the paste in thirds.
Laminate
Roll out carefully, then set aside on a floured plate in a cold place for 30 minutes.
Roll out twice more and set aside again.
After rolling 7 times, the paste is ready for use.
For tartlets, roll to about ¼ inch thick; for patties, roll to ⅛ inch thick.
Bake
Bake in a very hot oven at 400°F (200°C).
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
- Forms the paste structure that holds the layers of butter when rolled.
- Butter
- Stays solid between dough layers and melts in the oven, creating flaky separation.
- Egg yolk
- Adds richness and helps bind the stiff paste.
- Lemon juice
- Acidity that helps keep the dough tender and workable.
The step that matters
Keeping the butter cold while rolling and folding. If the butter softens and blends into the dough, the layers merge and the pastry loses its flakiness. Chilling between rolls keeps the butter in distinct sheets that turn to steam and lift the layers in the oven.
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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