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 ↓
Petit Choux
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the dough
In a saucepan, bring the butter and water to a boil.
Once boiling, stir in the flour and caster sugar.
Cook over medium heat, stirring until the mixture pulls away from the sides of the pan.
Remove from heat and beat in the eggs one at a time.
Pipe and bake
Transfer the mixture to a piping bag and pipe onto a greased baking sheet.
Bake in a 350°F (175°C) oven for about 1 hour.
Fill and finish
When done, open the sides of the cakes and fill with preserves or whipped cream.
Coat with glaze icing.
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 + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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
- Its starch and proteins set into the structure that holds the puffs' shape.
- Eggs
- They add structure and moisture, and their steam helps the puffs rise in the oven.
- Butter
- Melted into the boiling water, it adds fat for tenderness and richness.
- Caster sugar
- It adds sweetness and helps the shells brown.
The step that matters
Cooking the mixture until it pulls away from the sides of the pan. Cooking dries the flour paste and gelatinises its starch so it can hold its shape and trap steam. Undercooked paste is wetter and may collapse or fail to puff.
“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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