Why it works: Milk and butter 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 ↓
Petits Fours
Ingredients
Directions
The book gives no oven temperature. The 400°F in the steps was added when the recipe was transcribed, as a starting point.
Prepare the potato and yeast
Cook the potatoes in water until tender, then mash them.
Dissolve the yeast in warm milk or cream.
Pass the mashed potatoes through a sieve into a bowl.
Add the dissolved yeast to the potatoes and mix well.
Place the mixture in a warm spot to rise until doubled in size.
Make the dough
In another bowl, combine flour and butter, mixing until the butter is no longer visible.
Place this mixture in a warm spot to rise as well.
Once the first mixture has risen, combine both mixtures and knead by hand for 10 minutes.
Shape and bake
Form the dough into balls the size of a medium walnut and place them on buttered sheets.
Let the trays rise again until nearly doubled in size.
Bake in a hot oven (400°F / 200°C) until golden.
Glaze immediately with a milk-soaked brush after removing from the oven.
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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Potato + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Milk + flourtop 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
- Potatoes
- Add moisture and starch that keep the crumb soft and tender.
- Yeast
- Produces gas that makes the dough rise and become airy.
- Flour
- Forms the gluten network that gives the rolls their structure.
- Butter
- Adds fat that tenderizes the crumb and enriches the flavor.
- Milk or cream
- Hydrates the dough and adds richness and browning from milk sugars.
The step that matters
Kneading the combined dough. Kneading develops the gluten network that traps the gas from the yeast. Under-kneading leaves a dense, weak crumb, while the dough must still stay soft enough to handle.
Swap the potato
How well each one fits the dish's main ingredients (milk, flour, butter):
- Potatothe original
- Arrowrootfits about as well
- Leekfits less well
- Shallotfits less well
Fit is the average pairing score against milk, flour, butter. 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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