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 ↓
French Puffs
Ingredients
Directions
Make the paste
Melt the butter in the water and bring to a boil.
Add enough sifted flour to create a stiff paste.
Let the mixture cool, then mix in the eggs until well combined.
Fry and serve
Drop spoonfuls of the batter into boiling lard and fry until golden brown.
Dust with sugar and serve with currant jelly or your choice of jam.
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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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 + curranttop 17% of all pairsSmell alikemoderateCooked together7,856 recipes
Shared aroma: isoamyl acetate (banana, pear).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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
- Flour
- Provides the structure that holds the paste together and sets when fried.
- Eggs
- Add moisture and structure, helping the batter puff and set around steam.
- Butter
- Adds fat and richness to the dough, giving a tender texture.
The step that matters
Let the mixture cool before adding the eggs. If the paste is still too hot, the eggs will scramble or thin out instead of combining smoothly, so the batter loses the ability to puff when fried.
Swap the currant
How well each one fits the dish's main ingredients (butter, flour, egg, sugar):
- Raisinfits better
- Vanillafits better
- Figfits better
- Currantthe original
Fit is the average pairing score against butter, flour, egg, sugar. 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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