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
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.
Make the dough
Combine butter, flour, and lemon juice in a bowl.
Roll the mixture into a long strip.
Fold the strip in three and press the edges together.
This is the first roll and fold; repeat this process six more times.
Chill the pastry for at least 15 minutes between each roll and fold.
Finish and bake
After seven rolls and folds, roll the pastry to the desired thickness.
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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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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Flour + lemontop 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 separate layers that puff as its moisture turns to steam in the oven.
- Flour
- Provides the structure that holds the layers together as the pastry rises.
- Lemon juice
- Adds acidity that slightly softens gluten, keeping the dough easier to roll.
The step that matters
Chill between each roll and fold. Butter must stay cold to remain in distinct layers. If it softens and blends into the dough, the layers are lost and the pastry will not puff well.
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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