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 moderately hot oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Wash the butter thoroughly until free from salt.
Keep the flour and butter in a cold place, and ensure all utensils are ice cold.
Make the dough
Mix one-fourth of the butter into the flour, adding enough ice cold water to form a nice paste.
Roll out the dough thin and spread more butter on it with a knife.
Fold the dough as you would a piece of paper, repeating until all the butter is incorporated.
Roll the dough thoroughly for better results; half an hour is ideal.
Rest and bake
Refrigerate the dough for several hours, preferably overnight, but do not let it freeze.
Bake in a moderate oven at 350°F (175°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
- All-purpose flour
- Forms the structure of the dough when mixed with water.
- Butter
- Forms separate layers that puff apart as steam escapes during baking.
- Ice cold water
- Binds the flour into a paste while keeping the butter cold and firm.
The step that matters
Keeping the butter cold while folding. If the butter softens and blends into the dough, it cannot form separate layers, so the pastry will not puff. Chilling between rolls keeps the butter in distinct sheets.
“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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