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 ↓
Potato Rolls
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 batter
Mash the potato and mix with enough water to moisten.
Add the yeast, butter, sugar, milk, baking powder, and eggs; mix well.
Gradually stir in the flour until combined.
Bake and finish
Grease the tins with butter and pour in the batter.
Bake in a 400°F (200°C) oven until golden.
Once cool, spread jelly between the layers.
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.
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Potato + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
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
- Potato
- Adds moisture and a soft, tender crumb to the rolls.
- Eggs
- Provide structure and richness, helping the batter hold its shape while baking.
- Flour
- Forms the structure of the rolls as it sets with the eggs during baking.
- Baking powder
- Releases gas in the batter, helping the rolls rise in the oven.
- Sugar
- Sweetens the rolls and helps them brown in the oven.
- Yeast
- Adds a light, airy texture and some flavour to the dough.
Swap the potato
How well each one fits the dish's main ingredients (butter, sugar, milk, egg, flour):
- Sweet potatofits about as well
- Leekfits about as well
- Arrowrootfits about as well
- Potatothe original
Fit is the average pairing score against butter, sugar, milk, egg, 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.
More potato rolls recipes
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.

Deep-Fried Potato Balls119 recipes
Orange Potato Bread80 recipes
White Cake431 recipes
Pound Cake373 recipes