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 ↓
Potato Rolls
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 sponge
Mix mashed potato with lukewarm milk and melted lard or butter in a bowl.
Dissolve the yeast and salt in the milk mixture.
Add enough flour to create a thick batter that holds a drop from the spoon.
Cover the bowl and let it rise in a warm place until light and foaming.
Shape the rolls
Add more flour to make a stiff dough that doesn't stick.
Knead the dough for five minutes.
Roll the dough out to ½ inch thick.
Cut out rounds with a biscuit cutter.
Stack two rounds together.
Place the stacked rounds on a buttered baking pan.
Cover with a towel and let rise until doubled in size.
Bake and serve
Brush the rolls with melted butter.
Bake at 350°F (175°C) for about 20 minutes or until done.
Serve hot.
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.
Photo for illustrative purposes only · Contact us to use it
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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Butter + flourtop 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).
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
- Mashed potato
- Adds moisture and starch that keeps the rolls soft and tender.
- Compressed yeast
- Ferments the dough, producing gas that makes the rolls rise and become light.
- Lard or butter
- Adds fat that tenderizes the crumb and richness to the dough.
- Flour
- Provides gluten and starch that form the structure of the rolls.
- Milk
- Hydrates the flour and yeast and adds softness and browning through milk sugars.
The step that matters
Let the sponge rise until light and foaming. The yeast needs warmth and time to ferment fully; under-proofed dough will bake dense, while the gas it produces is what lifts the rolls.
Swap the potato
How well each one fits the dish's main ingredients (milk, butter, flour):
- Potatothe original
- Arrowrootfits about as well
- Leekfits less well
- Shallotfits less well
Fit is the average pairing score against milk, butter, flour. 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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