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 brisk oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the dough
If the butter is very salty, wash it in cold water and squeeze out moisture.
Ensure the flour is dry and free from lumps, then mix it with water to form a smooth paste using a knife.
Make the paste in a cool place.
Turn the paste onto a well-floured surface and roll it out to about 1 inch thick.
Laminate
Spread the paste with equal parts of butter and lard.
Sift a little flour over the spread paste.
Fold the paste.
Roll it out again.
Flour both the paste and rolling pin to prevent sticking.
Brush the paste with egg white after each rolling for better flakiness.
Repeat the spreading process three or four times.
Bake
Bake in a 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).
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 structure of the paste once mixed with water.
- Butter
- Forms separate fat layers between dough sheets that create flakiness when baked.
- Lard
- Adds fat layers alongside butter, helping create a flaky, tender texture.
- Cold water
- Combines with flour to form the paste and keeps the fat layers distinct.
The step that matters
Keep the fat and dough cool while laminating. If the butter and lard soften or melt into the dough, they blend in instead of forming separate layers, so the pastry loses its flakiness.
“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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