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 Pastry
Ingredients
Directions
Make the dough
Rub about a quarter of the butter into the flour.
Add the lemon juice.
Mix to a stiff paste with cold water.
Roll out into a thick square piece.
Laminate
Flatten the remaining butter into a cake.
Lay it on the pastry.
Fold the edges of the pastry over the butter.
Roll out into a long piece.
Flour.
Fold in three.
Turn half round with the open edges facing you.
Roll out again.
Fold.
Set aside for 2 hours.
Roll twice more.
Let it stand for half an hour.
Roll twice more.
It is ready to use.
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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Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Lemon + flourtop 17% of all pairsSmell alikemoderateCooked together30,404 recipes
Shared aroma: isobutyraldehyde (malty, green).
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 flaky layers as it stays solid between sheets of dough, creating lift when baked.
- Flour
- Provides the structure that holds the dough together and supports the layers.
- Lemon juice
- Adds a small amount of acidity that helps keep the dough tender.
The step that matters
Keep the butter cold and in a cake shape while rolling. If the butter softens and melts into the dough, the layers merge and the pastry loses its flakiness. Resting the dough between rolls keeps the butter firm.
Swap the lemon
How well each one fits the dish's main ingredients (butter, flour):
- Raisinfits better
- Vanillafits better
- Coconutfits better
- Lemonthe original
Fit is the average pairing score against butter, flour. 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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