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 ↓
Raised Sweet-potato Bread
Ingredients
Directions
The book says “a moderate oven”. The 350°F in the steps is the modern equivalent, not the book's own figure.
Prepare the dough
Boil, peel, and mash enough sweet potatoes to yield 1 quart of pulp.
Dissolve the yeast in the milk and add it to the mashed sweet potatoes.
Stir in the salt, sugar, and boiling water, then mix in enough flour to make a thick batter.
Cover the batter with a thick towel and let it rise in a warm place until it doubles in size.
Once risen, mix in more flour to form a soft dough and knead for 5 minutes.
Shape and bake
Grease three iron pans and fill each half full with the dough, then cover and let rise again until doubled.
Bake in a moderate oven (350°F / 175°C) until the loaves are fully cooked.
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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Sweet potato + flourtop 9% of all pairsSmell alikemoderateCooked together627 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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
- Sweet potatoes
- Provide moisture and body, giving the bread a soft, tender crumb.
- Yeast
- Ferments the sugars and produces gas that makes the dough rise.
- Flour
- Forms the gluten network that gives the dough structure and holds its shape.
- Milk
- Adds moisture and richness, softening the crumb and aiding browning.
- Sugar
- Feeds the yeast and contributes sweetness and surface browning.
The step that matters
Letting the dough rise until doubled. Yeast needs a warm place and enough time to produce gas. Under-proofed dough bakes up dense, while over-proofed dough can collapse, so the dough should be allowed to double before shaping and again before baking.
Swap the sweet potato
How well each one fits the dish's main ingredients (milk, sugar, flour, butter):
- Arrowrootfits about as well
- Sweet potatothe original
- Potatofits about as well
- Leekfits about as well
Fit is the average pairing score against milk, sugar, 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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