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 ↓
Delicate Sugar Paste, for Tarts, or Rich Cheese-cakes
Ingredients
Directions
Rub the butter into the flour until it resembles grated bread.
Sift the powdered sugar through a fine sieve and mix it well with the flour.
Add boiling water gradually to form a stiff paste.
Optionally, add a little rose or orange-flower water for flavor.
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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Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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Sugar + rosetop 25% of all pairsSmell alikelowCooked together3,584 recipes
Shared aroma: beta-damascenone (apple, rose).
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Flour + rosetop 27% of all pairsSmell alikelowCooked together1,643 recipes
Shared aroma: eugenol (clove, spicy).
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 paste once moistened with water.
- Butter
- Coats the flour particles, adding richness and tenderness to the paste.
- Powdered sugar
- Sweetens the paste and dissolves easily into the dough for a smooth texture.
The step that matters
Adding the boiling water. Water must be added gradually so the paste hydrates evenly. Adding it too fast can make the paste sticky or uneven, while adding too little leaves it crumbly and hard to roll.
“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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