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 ↓
Cream Puffs and Eclairs
Ingredients
Directions
The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the dough
In a saucepan, combine the butter and boiling water.
Once the butter is melted and the water is boiling, stir in the flour and salt all at once.
Stir quickly until the mixture is firm, about 1-2 minutes, then remove from heat.
Let the mixture cool, then beat in the eggs one at a time until light and smooth.
Shape and bake
Drop tablespoonfuls of the mixture onto buttered baking sheets, spaced apart.
Bake in a preheated oven at 400°F (200°C) for 30 minutes.
Fill and serve
Once cool, split the puffs and fill with whipped cream or pastry cream.
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 + 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).
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
- Eggs
- Add structure and richness, and help the dough puff and set as it bakes.
- Butter
- Adds fat and richness, and melts into the boiling water to start the dough.
- All-purpose flour
- Gives the paste its structure, which holds the steam-raised shape as it bakes.
The step that matters
Beat in the eggs gradually after the dough cools. If the dough is still hot, the eggs can scramble, and if it is too runny the puffs will not rise and hold their shape. Adding them one at a time lets you reach a smooth, thick batter that can puff in the oven.
“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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