Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Boston Cream Puffs
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the choux paste
Boil the butter and water together.
While boiling, stir in the flour and let it cool.
Beat the egg yolks with the baking soda into the cooled mixture.
Beat the egg whites until light and fold them into the mixture.
Make the cream
For the cream, boil the milk, then add the sugar, eggs, and flour, and flavor with lemon extract.
Bake and fill
Bake the crust in a 400°F (200°C) oven for 15-20 minutes.
When done, open the side of the puffs and fill with the cream, then pinch them closed.
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 + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 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
- Flour
- Gives the puff dough its structure and thickens the cream.
- Butter
- Adds fat and richness to the dough, tenderizing the crust.
- Eggs
- Set the structure as the puffs bake and add richness to the cream.
- Milk
- Provides the liquid and richness for the filling.
- Sugar
- Sweetens the cream filling.
The step that matters
Folding in the beaten egg whites. Beaten whites trap air that makes the puffs rise. Stirring them in roughly rather than folding gently deflates the batter, so the puffs bake flat and dense.
Swap the lemon
How well each one fits the dish's main ingredients (flour, butter, egg, milk, sugar, cream):
- Vanillafits better
- Raisinfits better
- Coconutfits better
- Lemonthe original
Fit is the average pairing score against flour, butter, egg, milk, sugar, cream. 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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