Why it works: Milk and butter match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and 81,222 recipes mention both. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
The recipe
Ingredients
Contains: egg, milk, wheat (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Make the dough
Heat the butter, lard, and milk in a saucepan until boiling.
Add the flour and salt.
Stir vigorously until combined, then remove from heat.
Add the unbeaten egg, stirring until well mixed.
Allow to cool.
Fry and drain
Drop small pieces from a teaspoon into deep fat.
Fry until brown and crisp.
Drain on brown paper.
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 aroma chemistry they share, and how many recipes mention both.
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Milk + buttertop 3% of all pairsAroma overlapstrongMentioned together81,222 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Flour + buttertop 6% of all pairsAroma overlaplowMentioned together122,858 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + flourtop 8% of all pairsAroma overlaplowMentioned together76,993 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + eggtop 8% of all pairsAroma overlapstrongMentioned together118,511 recipes
Shared aroma: nonanal (fat, citrus).
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Flour + eggtop 8% of all pairsAroma overlaplowMentioned together104,138 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter share little aroma chemistry, yet 122,858 recipes mention both: they likely 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
- Forms the starch structure that sets and gives the pastry its crisp, hollow body.
- Egg
- Binds the paste, adds moisture, and helps it puff and hold its shape.
- Butter
- Adds fat for richness and a tender texture, along with flavor and browning.
- Lard
- Adds fat that keeps the paste tender and helps create a crisp surface.
- Milk
- Adds moisture to the paste and its milk sugars help the surface brown.
The step that matters
Adding the egg. The egg must be stirred into the paste until smooth and glossy. Egg added to a paste that is too hot can scramble, and a paste that is too stiff or too thin will not puff properly when fried.
“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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