Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and 81,283 recipes mention both. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Parker House 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 dough
Melt the butter in the warm milk.
Add the sugar, salt, and flour, then let it rise overnight.
In the morning, dissolve the baking soda in water and mix it into the dough.
Add enough flour to achieve a consistency similar to biscuit dough.
Shape and bake
Roll out the dough to a thickness of ¼ inch.
Cut with a large round cutter and spread soft butter on top.
Fold each round in half and place them apart on a baking sheet.
Cover and let them rise near a warm place for 15-20 minutes.
Bake in a preheated oven at 400°F (200°C) until golden.
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 aroma chemistry they share, and how many recipes mention both.
-
Milk + buttertop 7% of all pairsAroma overlapmoderateMentioned together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + flourtop 12% of all pairsAroma overlaplowMentioned together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Milk + flourtop 14% of all pairsAroma overlaplowMentioned together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + flourtop 15% of all pairsAroma overlapmoderateMentioned together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
-
Egg + flourtop 15% of all pairsAroma overlaplowMentioned together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour share little aroma chemistry, yet 124,287 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
- Provides the structure that holds the rolls' shape and crumb.
- Yeast
- Ferments the dough overnight, producing gas that makes the rolls rise.
- Milk
- Adds moisture and softness to the dough and helps browning.
- Butter
- Adds fat for tenderness and richness in the dough and on top.
- Baking soda
- Reacts with the dough to add some additional lift and rise.
- Egg
- Adds structure and richness to the dough.
The step that matters
Let the dough rise overnight. Yeast needs time to ferment and build gas and flavor; cutting this short leaves the dough dense and under-risen, so the rolls bake up flat and heavy.
“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.
You might also like
The Sunday pairing: one pairing, the chemistry behind it, and how to cook it. No spam, unsubscribe anytime.
Prefer an account? Create a free account for sign-in; Pro adds the full results and chemistry.

Cornbread345 recipes
Bread Pudding336 recipes
Potato Bread124 recipes
Nut Bread109 recipes