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 ↓
Short Crust
Ingredients
Directions
Make the dough
On a clean surface, mix the flour and butter until it resembles sifted bread crumbs.
Add the castor sugar and mix well.
Make a well in the center and add the egg yolk.
Sprinkle the salt over the egg yolk.
Add the lemon juice and cold water.
Mix all ingredients with your fingers until a stiff paste forms.
Keep your hands and the surface floured to prevent sticking.
Knead the paste lightly with your knuckles.
Roll out
Flour a rolling pin and roll out the paste to the desired size and thickness.
For a fruit tart, roll it out slightly larger than the pie dish and about ¼ inch thick.
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 + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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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).
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
- Provides the structure that holds the pastry together once mixed with liquid.
- Butter
- Coats flour particles to keep the crust tender and flaky, and adds rich flavor.
- Castor sugar
- Adds gentle sweetness and helps the crust brown lightly during baking.
- Egg yolk
- Binds the dough and adds richness and color.
The step that matters
Keep the butter cold and handle the dough lightly. Rubbing the butter into the flour until it resembles bread crumbs, and kneading only lightly, keeps the fat in small pieces. Warm or overworked dough develops gluten and becomes tough rather than tender and flaky.
Swap the lemon
How well each one fits the dish's main ingredients (flour, butter, sugar, egg):
- Raisinfits better
- Vanillafits better
- Figfits about as well
- Lemonthe original
Fit is the average pairing score against flour, butter, sugar, 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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